356640636405 has 96 divisors (see below), whose sum is σ = 615984369408. Its totient is φ = 176130662400.

The previous prime is 356640636397. The next prime is 356640636461. The reversal of 356640636405 is 504636046653.

It is not a de Polignac number, because 356640636405 - 2³ = 356640636397 is a prime.

It is a super-2 number, since 2×356640636405² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 203445009 + ... + 203446761.

It is an arithmetic number, because the mean of its divisors is an integer number (6416503848).

Almost surely, 2^356640636405 is an apocalyptic number.

It is an amenable number.

356640636405 is a deficient number, since it is larger than the sum of its proper divisors (259343733003).

356640636405 is a wasteful number, since it uses less digits than its factorization.

356640636405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 356640636405 in words is "three hundred fifty-six billion, six hundred forty million, six hundred thirty-six thousand, four hundred five".