15420053872 has 20 divisors (see below), whose sum is σ = 30571154680. Its totient is φ = 7530723648.

The previous prime is 15420053867. The next prime is 15420053893. The reversal of 15420053872 is 27835002451.

It is a super-2 number, since 2×15420053872² (a number of 21 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 in 3 ways as a sum of consecutive naturals, for example, 11205747 + ... + 11207122.

It is an arithmetic number, because the mean of its divisors is an integer number (1528557734).

Almost surely, 2^15420053872 is an apocalyptic number.

It is an amenable number.

15420053872 is a deficient number, since it is larger than the sum of its proper divisors (15151100808).

15420053872 is a wasteful number, since it uses less digits than its factorization.

15420053872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22412920 (or 22412914 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 15420053872 in words is "fifteen billion, four hundred twenty million, fifty-three thousand, eight hundred seventy-two".