31604145020555 has 8 divisors (see below), whose sum is σ = 38006885418432. Its totient is φ = 25228708420608.

The previous prime is 31604145020543. The next prime is 31604145020563. The reversal of 31604145020555 is 55502054140613.

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

It is a cyclic number.

It is not a de Polignac number, because 31604145020555 - 2¹⁸ = 31604144758411 is a prime.

It is a Duffinian number.

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, 6825946934 + ... + 6825951563.

It is an arithmetic number, because the mean of its divisors is an integer number (4750860677304).

Almost surely, 2^{31604145020555} is an apocalyptic number.

31604145020555 is a deficient number, since it is larger than the sum of its proper divisors (6402740397877).

31604145020555 is a wasteful number, since it uses less digits than its factorization.

31604145020555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13651898965.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 31604145020555 in words is "thirty-one trillion, six hundred four billion, one hundred forty-five million, twenty thousand, five hundred fifty-five".