15487488681 has 16 divisors (see below), whose sum is σ = 23612141568. Its totient is φ = 8845434000.

The previous prime is 15487488641. The next prime is 15487488691. The reversal of 15487488681 is 18688478451.

It is not a de Polignac number, because 15487488681 - 2¹⁰ = 15487487657 is a prime.

It is a super-2 number, since 2×15487488681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15487488641) 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, 148035 + ... + 229976.

It is an arithmetic number, because the mean of its divisors is an integer number (1475758848).

Almost surely, 2^15487488681 is an apocalyptic number.

It is an amenable number.

15487488681 is a deficient number, since it is larger than the sum of its proper divisors (8124652887).

15487488681 is a wasteful number, since it uses less digits than its factorization.

15487488681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379972.

The product of its digits is 13762560, while the sum is 60.

The spelling of 15487488681 in words is "fifteen billion, four hundred eighty-seven million, four hundred eighty-eight thousand, six hundred eighty-one".