265140450420531 has 48 divisors (see below), whose sum is σ = 446846315535360. Its totient is φ = 138904528916160.

The previous prime is 265140450420523. The next prime is 265140450420551. The reversal of 265140450420531 is 135024054041562.

It is not a de Polignac number, because 265140450420531 - 2³ = 265140450420523 is a prime.

It is a super-2 number, since 2×265140450420531² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (265140450420551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1531047996 + ... + 1531221161.

It is an arithmetic number, because the mean of its divisors is an integer number (9309298240320).

Almost surely, 2^{265140450420531} is an apocalyptic number.

265140450420531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

265140450420531 is a deficient number, since it is larger than the sum of its proper divisors (181705865114829).

265140450420531 is a wasteful number, since it uses less digits than its factorization.

265140450420531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062269224 (or 3062269217 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 265140450420531 in words is "two hundred sixty-five trillion, one hundred forty billion, four hundred fifty million, four hundred twenty thousand, five hundred thirty-one".