15202020556 has 6 divisors (see below), whose sum is σ = 26603535980. Its totient is φ = 7601010276.

The previous prime is 15202020541. The next prime is 15202020557. The reversal of 15202020556 is 65502020251.

It is a super-2 number, since 2×15202020556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15202020557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1900252566 + ... + 1900252573.

Almost surely, 2^15202020556 is an apocalyptic number.

It is an amenable number.

15202020556 is a deficient number, since it is larger than the sum of its proper divisors (11401515424).

15202020556 is a wasteful number, since it uses less digits than its factorization.

15202020556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800505143 (or 3800505141 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 15202020556 in words is "fifteen billion, two hundred two million, twenty thousand, five hundred fifty-six".