531400505445 has 24 divisors (see below), whose sum is σ = 969572853600. Its totient is φ = 268497097056.

The previous prime is 531400505371. The next prime is 531400505453. The reversal of 531400505445 is 544505004135.

531400505445 is a `hidden beast` number, since 5 + 3 + 140 + 0 + 505 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 531400505445 - 2¹⁰ = 531400504421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 310759675 + ... + 310761384.

It is an arithmetic number, because the mean of its divisors is an integer number (40398868900).

Almost surely, 2^531400505445 is an apocalyptic number.

It is an amenable number.

531400505445 is a deficient number, since it is larger than the sum of its proper divisors (438172348155).

531400505445 is a wasteful number, since it uses less digits than its factorization.

531400505445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621521089 (or 621521086 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 531400505445 in words is "five hundred thirty-one billion, four hundred million, five hundred five thousand, four hundred forty-five".