15393116761 has 9 divisors (see below), whose sum is σ = 16921207093. Its totient is φ = 13992501820.

The previous prime is 15393116747. The next prime is 15393116801. The reversal of 15393116761 is 16761139351.

The square root of 15393116761 is 124069.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 15393116761 - 2⁵ = 15393116729 is a prime.

It is a super-2 number, since 2×15393116761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15393116261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1359120 + ... + 1370398.

Almost surely, 2^15393116761 is an apocalyptic number.

15393116761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15393116761 is the 124069-th square number.

15393116761 is the 62035-th centered octagonal number.

It is an amenable number.

15393116761 is a deficient number, since it is larger than the sum of its proper divisors (1528090332).

15393116761 is an frugal number, since it uses more digits than its factorization.

15393116761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22580 (or 11290 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The spelling of 15393116761 in words is "fifteen billion, three hundred ninety-three million, one hundred sixteen thousand, seven hundred sixty-one".