2123562990026 has 8 divisors (see below), whose sum is σ = 3185353298820. Its totient is φ = 1061778557088.

The previous prime is 2123562990011. The next prime is 2123562990083. The reversal of 2123562990026 is 6200992653212.

It is a Cunningham number, because it is equal to 1457245²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 2123562990025 + 1 = 1457245^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413891 + ... + 2102006.

Almost surely, 2^{2123562990026} is an apocalyptic number.

2123562990026 is a deficient number, since it is larger than the sum of its proper divisors (1061790308794).

2123562990026 is a wasteful number, since it uses less digits than its factorization.

2123562990026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937928.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 2123562990026 in words is "two trillion, one hundred twenty-three billion, five hundred sixty-two million, nine hundred ninety thousand, twenty-six".