21487062297 has 32 divisors (see below), whose sum is σ = 30547680768. Its totient is φ = 13387677696.

The previous prime is 21487062293. The next prime is 21487062299. The reversal of 21487062297 is 79226078412.

It is not a de Polignac number, because 21487062297 - 2² = 21487062293 is a prime.

It is a super-3 number, since 3×21487062297³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21487062293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6425808 + ... + 6429150.

It is an arithmetic number, because the mean of its divisors is an integer number (954615024).

Almost surely, 2^21487062297 is an apocalyptic number.

It is an amenable number.

21487062297 is a deficient number, since it is larger than the sum of its proper divisors (9060618471).

21487062297 is a wasteful number, since it uses less digits than its factorization.

21487062297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 21487062297 in words is "twenty-one billion, four hundred eighty-seven million, sixty-two thousand, two hundred ninety-seven".