15420053871 has 24 divisors (see below), whose sum is σ = 22542371280. Its totient is φ = 10156421376.

The previous prime is 15420053867. The next prime is 15420053893. The reversal of 15420053871 is 17835002451.

15420053871 is a `hidden beast` number, since 1 + 54 + 2 + 0 + 0 + 538 + 71 = 666.

It is not a de Polignac number, because 15420053871 - 2² = 15420053867 is a prime.

It is a super-2 number, since 2×15420053871² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420053071) 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, 337735 + ... + 380663.

It is an arithmetic number, because the mean of its divisors is an integer number (939265470).

Almost surely, 2^15420053871 is an apocalyptic number.

15420053871 is a deficient number, since it is larger than the sum of its proper divisors (7122317409).

15420053871 is a wasteful number, since it uses less digits than its factorization.

15420053871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43415 (or 43412 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 15420053871 in words is "fifteen billion, four hundred twenty million, fifty-three thousand, eight hundred seventy-one".