20251456133536 has 24 divisors (see below), whose sum is σ = 40350416367744. Its totient is φ = 10003731341760.

The previous prime is 20251456133507. The next prime is 20251456133539. The reversal of 20251456133536 is 63533165415202.

It is not an unprimeable number, because it can be changed into a prime (20251456133539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3812394960 + ... + 3812400271.

It is an arithmetic number, because the mean of its divisors is an integer number (1681267348656).

Almost surely, 2^{20251456133536} is an apocalyptic number.

It is an amenable number.

20251456133536 is a deficient number, since it is larger than the sum of its proper divisors (20098960234208).

20251456133536 is an equidigital number, since it uses as much as digits as its factorization.

20251456133536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624795324 (or 7624795316 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 20251456133536 in words is "twenty trillion, two hundred fifty-one billion, four hundred fifty-six million, one hundred thirty-three thousand, five hundred thirty-six".