42647254658 has 4 divisors (see below), whose sum is σ = 63970881990. Its totient is φ = 21323627328.

The previous prime is 42647254627. The next prime is 42647254667. The reversal of 42647254658 is 85645274624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42482568769 + 164685889 = 206113^2 + 12833^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661813663 + ... + 10661813666.

Almost surely, 2^42647254658 is an apocalyptic number.

42647254658 is a deficient number, since it is larger than the sum of its proper divisors (21323627332).

42647254658 is a wasteful number, since it uses less digits than its factorization.

42647254658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21323627331.

The product of its digits is 12902400, while the sum is 53.

The spelling of 42647254658 in words is "forty-two billion, six hundred forty-seven million, two hundred fifty-four thousand, six hundred fifty-eight".