651987472653 has 24 divisors (see below), whose sum is σ = 1027403039520. Its totient is φ = 395132830560.

The previous prime is 651987472583. The next prime is 651987472681. The reversal of 651987472653 is 356274789156.

651987472653 is a `hidden beast` number, since 6 + 519 + 8 + 7 + 47 + 26 + 53 = 666.

It is not a de Polignac number, because 651987472653 - 2⁹ = 651987472141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651987472553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4701375 + ... + 4838067.

It is an arithmetic number, because the mean of its divisors is an integer number (42808459980).

Almost surely, 2^651987472653 is an apocalyptic number.

It is an amenable number.

651987472653 is a deficient number, since it is larger than the sum of its proper divisors (375415566867).

651987472653 is a wasteful number, since it uses less digits than its factorization.

651987472653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184889 (or 184886 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 651987472653 in words is "six hundred fifty-one billion, nine hundred eighty-seven million, four hundred seventy-two thousand, six hundred fifty-three".