255616261642 has 8 divisors (see below), whose sum is σ = 438199305696. Its totient is φ = 109549826412.

The previous prime is 255616261631. The next prime is 255616261669. The reversal of 255616261642 is 246162616552.

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

It is a junction number, because it is equal to n+sod(n) for n = 255616261592 and 255616261601.

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, 9129152188 + ... + 9129152215.

It is an arithmetic number, because the mean of its divisors is an integer number (54774913212).

Almost surely, 2^255616261642 is an apocalyptic number.

255616261642 is a deficient number, since it is larger than the sum of its proper divisors (182583044054).

255616261642 is a wasteful number, since it uses less digits than its factorization.

255616261642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18258304412.

The product of its digits is 1036800, while the sum is 46.

The spelling of 255616261642 in words is "two hundred fifty-five billion, six hundred sixteen million, two hundred sixty-one thousand, six hundred forty-two".