15502053381 has 16 divisors (see below), whose sum is σ = 22350898944. Its totient is φ = 9519824384.

The previous prime is 15502053361. The next prime is 15502053439. The reversal of 15502053381 is 18335020551.

It is a cyclic number.

It is not a de Polignac number, because 15502053381 - 2¹⁴ = 15502036997 is a prime.

It is a super-2 number, since 2×15502053381² (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 (15502053311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3231240 + ... + 3236033.

It is an arithmetic number, because the mean of its divisors is an integer number (1396931184).

Almost surely, 2^15502053381 is an apocalyptic number.

It is an amenable number.

15502053381 is a deficient number, since it is larger than the sum of its proper divisors (6848845563).

15502053381 is a wasteful number, since it uses less digits than its factorization.

15502053381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6467340.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 15502053381 in words is "fifteen billion, five hundred two million, fifty-three thousand, three hundred eighty-one".