15402061604 has 12 divisors (see below), whose sum is σ = 27093265164. Its totient is φ = 7661128704.

The previous prime is 15402061589. The next prime is 15402061613. The reversal of 15402061604 is 40616020451.

It can be written as a sum of positive squares in 2 ways, for example, as 7148702500 + 8253359104 = 84550^2 + 90848^2 .

It is a super-2 number, since 2×15402061604² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9974657 + ... + 9976200.

It is an arithmetic number, because the mean of its divisors is an integer number (2257772097).

Almost surely, 2^15402061604 is an apocalyptic number.

It is an amenable number.

15402061604 is a deficient number, since it is larger than the sum of its proper divisors (11691203560).

15402061604 is a wasteful number, since it uses less digits than its factorization.

15402061604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19951054 (or 19951052 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 15402061604 in words is "fifteen billion, four hundred two million, sixty-one thousand, six hundred four".