653230887581 has 12 divisors (see below), whose sum is σ = 678628514112. Its totient is φ = 628496058984.

The previous prime is 653230887577. The next prime is 653230887619. The reversal of 653230887581 is 185788032356.

It is not a de Polignac number, because 653230887581 - 2² = 653230887577 is a prime.

It is a super-2 number, since 2×653230887581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653230887521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1832735 + ... + 2159948.

It is an arithmetic number, because the mean of its divisors is an integer number (56552376176).

Almost surely, 2^653230887581 is an apocalyptic number.

It is an amenable number.

653230887581 is a deficient number, since it is larger than the sum of its proper divisors (25397626531).

653230887581 is an equidigital number, since it uses as much as digits as its factorization.

653230887581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992848 (or 3992789 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 653230887581 in words is "six hundred fifty-three billion, two hundred thirty million, eight hundred eighty-seven thousand, five hundred eighty-one".