15490190080856 has 8 divisors (see below), whose sum is σ = 29044106401620. Its totient is φ = 7745095040424.

The previous prime is 15490190080763. The next prime is 15490190080901. The reversal of 15490190080856 is 65808009109451.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×15490190080856² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968136880046 + ... + 968136880061.

Almost surely, 2^{15490190080856} is an apocalyptic number.

It is an amenable number.

15490190080856 is a deficient number, since it is larger than the sum of its proper divisors (13553916320764).

15490190080856 is a wasteful number, since it uses less digits than its factorization.

15490190080856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936273760113 (or 1936273760109 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 15490190080856 in words is "fifteen trillion, four hundred ninety billion, one hundred ninety million, eighty thousand, eight hundred fifty-six".