15402134844 has 72 divisors (see below), whose sum is σ = 43393044240. Its totient is φ = 4577720832.

The previous prime is 15402134833. The next prime is 15402134849. The reversal of 15402134844 is 44843120451.

15402134844 is a `hidden beast` number, since 1 + 540 + 2 + 1 + 34 + 84 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15402134799 and 15402134808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15402134849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 650659 + ... + 673914.

It is an arithmetic number, because the mean of its divisors is an integer number (602681170).

Almost surely, 2^15402134844 is an apocalyptic number.

It is an amenable number.

15402134844 is an abundant number, since it is smaller than the sum of its proper divisors (27990909396).

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

15402134844 is a wasteful number, since it uses less digits than its factorization.

15402134844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324619 (or 1324614 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 15402134844 in words is "fifteen billion, four hundred two million, one hundred thirty-four thousand, eight hundred forty-four".