53412581664 has 72 divisors (see below), whose sum is σ = 163576042812. Its totient is φ = 16434639360.

The previous prime is 53412581659. The next prime is 53412581687. The reversal of 53412581664 is 46618521435.

53412581664 is a `hidden beast` number, since 5 + 3 + 4 + 1 + 2 + 581 + 6 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 48991395600 + 4421186064 = 221340^2 + 66492^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7129347 + ... + 7136834.

Almost surely, 2^53412581664 is an apocalyptic number.

It is an amenable number.

53412581664 is an abundant number, since it is smaller than the sum of its proper divisors (110163461148).

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

53412581664 is a wasteful number, since it uses less digits than its factorization.

53412581664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14266210 (or 14266199 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 53412581664 in words is "fifty-three billion, four hundred twelve million, five hundred eighty-one thousand, six hundred sixty-four".