618652256816 has 40 divisors (see below), whose sum is σ = 1307699926848. Its totient is φ = 281185352000.

The previous prime is 618652256797. The next prime is 618652256837.

618652256816 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×618652256816² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480711 + ... + 2718681.

Almost surely, 2^618652256816 is an apocalyptic number.

It is an amenable number.

618652256816 is an abundant number, since it is smaller than the sum of its proper divisors (689047670032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618652256816 is a wasteful number, since it uses less digits than its factorization.

618652256816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252761 (or 252755 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 56.

The spelling of 618652256816 in words is "six hundred eighteen billion, six hundred fifty-two million, two hundred fifty-six thousand, eight hundred sixteen".