655440464531 has 8 divisors (see below), whose sum is σ = 694649901024. Its totient is φ = 616303707520.

The previous prime is 655440464461. The next prime is 655440464537. The reversal of 655440464531 is 135464044556.

655440464531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655440464531 - 2²⁶ = 655373355667 is a prime.

It is a super-2 number, since 2×655440464531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655440464537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18151295 + ... + 18187368.

It is an arithmetic number, because the mean of its divisors is an integer number (86831237628).

Almost surely, 2^655440464531 is an apocalyptic number.

655440464531 is a deficient number, since it is larger than the sum of its proper divisors (39209436493).

655440464531 is a wasteful number, since it uses less digits than its factorization.

655440464531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36339741.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 655440464531 in words is "six hundred fifty-five billion, four hundred forty million, four hundred sixty-four thousand, five hundred thirty-one".