15672786481 has 27 divisors (see below), whose sum is σ = 18211926873. Its totient is φ = 13475559240.

The previous prime is 15672786457. The next prime is 15672786487. The reversal of 15672786481 is 18468727651.

The square root of 15672786481 is 125191.

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

It is not a de Polignac number, because 15672786481 - 2⁹ = 15672785969 is a prime.

It is a super-2 number, since 2×15672786481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15672786487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26164620 + ... + 26165218.

Almost surely, 2^15672786481 is an apocalyptic number.

15672786481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15672786481 is the 125191-st square number.

15672786481 is the 62596-th centered octagonal number.

It is an amenable number.

15672786481 is a deficient number, since it is larger than the sum of its proper divisors (2539140392).

15672786481 is an frugal number, since it uses more digits than its factorization.

15672786481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258 (or 629 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The spelling of 15672786481 in words is "fifteen billion, six hundred seventy-two million, seven hundred eighty-six thousand, four hundred eighty-one".