405097649954 has 4 divisors (see below), whose sum is σ = 607646474934. Its totient is φ = 202548824976.

The previous prime is 405097649947. The next prime is 405097649981. The reversal of 405097649954 is 459946790504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 394161719329 + 10935930625 = 627823^2 + 104575^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101274412487 + ... + 101274412490.

Almost surely, 2^405097649954 is an apocalyptic number.

405097649954 is a deficient number, since it is larger than the sum of its proper divisors (202548824980).

405097649954 is a wasteful number, since it uses less digits than its factorization.

405097649954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202548824979.

The product of its (nonzero) digits is 48988800, while the sum is 62.

The spelling of 405097649954 in words is "four hundred five billion, ninety-seven million, six hundred forty-nine thousand, nine hundred fifty-four".