405477256964 has 12 divisors (see below), whose sum is σ = 764168676684. Its totient is φ = 187143349344.

The previous prime is 405477256963. The next prime is 405477256981. The reversal of 405477256964 is 469652774504.

It can be written as a sum of positive squares in 2 ways, for example, as 217676367364 + 187800889600 = 466558^2 + 433360^2 .

It is not an unprimeable number, because it can be changed into a prime (405477256963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3898819727 + ... + 3898819830.

It is an arithmetic number, because the mean of its divisors is an integer number (63680723057).

Almost surely, 2^405477256964 is an apocalyptic number.

It is an amenable number.

405477256964 is a deficient number, since it is larger than the sum of its proper divisors (358691419720).

405477256964 is a wasteful number, since it uses less digits than its factorization.

405477256964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797639574 (or 7797639572 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 59.

The spelling of 405477256964 in words is "four hundred five billion, four hundred seventy-seven million, two hundred fifty-six thousand, nine hundred sixty-four".