1536415645644 has 72 divisors (see below), whose sum is σ = 4378337858160. Its totient is φ = 465580494720.

The previous prime is 1536415645577. The next prime is 1536415645753. The reversal of 1536415645644 is 4465465146351.

1536415645644 is a `hidden beast` number, since 1 + 5 + 3 + 6 + 4 + 15 + 64 + 564 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58772349 + ... + 58798484.

It is an arithmetic number, because the mean of its divisors is an integer number (60810248030).

Almost surely, 2^{1536415645644} is an apocalyptic number.

It is an amenable number.

1536415645644 is an abundant number, since it is smaller than the sum of its proper divisors (2841922212516).

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

1536415645644 is a wasteful number, since it uses less digits than its factorization.

1536415645644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117570868 (or 117570849 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

The spelling of 1536415645644 in words is "one trillion, five hundred thirty-six billion, four hundred fifteen million, six hundred forty-five thousand, six hundred forty-four".