981862904655 has 56 divisors (see below), whose sum is σ = 1769558413392. Its totient is φ = 522766980864.

The previous prime is 981862904641. The next prime is 981862904683. The reversal of 981862904655 is 556409268189.

981862904655 is a `hidden beast` number, since 9 + 8 + 1 + 86 + 2 + 90 + 465 + 5 = 666.

It is not a de Polignac number, because 981862904655 - 2¹⁵ = 981862871887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981862904592 and 981862904601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1910167 + ... + 2369063.

It is an arithmetic number, because the mean of its divisors is an integer number (31599257382).

Almost surely, 2^981862904655 is an apocalyptic number.

981862904655 is a deficient number, since it is larger than the sum of its proper divisors (787695508737).

981862904655 is an equidigital number, since it uses as much as digits as its factorization.

981862904655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459507 (or 459492 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 63.

The spelling of 981862904655 in words is "nine hundred eighty-one billion, eight hundred sixty-two million, nine hundred four thousand, six hundred fifty-five".