531135423545 has 16 divisors (see below), whose sum is σ = 664084008000. Its totient is φ = 407304827328.

The previous prime is 531135423521. The next prime is 531135423557. The reversal of 531135423545 is 545324531135.

It is a cyclic number.

It is not a de Polignac number, because 531135423545 - 2²² = 531131229241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13156115 + ... + 13196424.

It is an arithmetic number, because the mean of its divisors is an integer number (41505250500).

Almost surely, 2^531135423545 is an apocalyptic number.

It is an amenable number.

531135423545 is a deficient number, since it is larger than the sum of its proper divisors (132948584455).

531135423545 is a wasteful number, since it uses less digits than its factorization.

531135423545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26352712.

The product of its digits is 540000, while the sum is 41.

The spelling of 531135423545 in words is "five hundred thirty-one billion, one hundred thirty-five million, four hundred twenty-three thousand, five hundred forty-five".