906345317522 has 18 divisors (see below), whose sum is σ = 1389156323463. Its totient is φ = 443499720972.

The previous prime is 906345317459. The next prime is 906345317623. The reversal of 906345317522 is 225713543609.

It can be written as a sum of positive squares in only one way, i.e., 453172658761 + 453172658761 = 673181^2 + 673181^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=673181.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 63271853 + ... + 63286175.

Almost surely, 2^906345317522 is an apocalyptic number.

906345317522 is a deficient number, since it is larger than the sum of its proper divisors (482811005941).

906345317522 is an frugal number, since it uses more digits than its factorization.

906345317522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28742 (or 14372 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 906345317522 in words is "nine hundred six billion, three hundred forty-five million, three hundred seventeen thousand, five hundred twenty-two".