400874977643 has 8 divisors (see below), whose sum is σ = 458242659840. Its totient is φ = 343532252520.

The previous prime is 400874977637. The next prime is 400874977669. The reversal of 400874977643 is 346779478004.

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 400874977643 - 2⁶ = 400874977579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400874977693) 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, 6204833 + ... + 6269106.

It is an arithmetic number, because the mean of its divisors is an integer number (57280332480).

Almost surely, 2^400874977643 is an apocalyptic number.

400874977643 is a deficient number, since it is larger than the sum of its proper divisors (57367682197).

400874977643 is a wasteful number, since it uses less digits than its factorization.

400874977643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12478537.

The product of its (nonzero) digits is 28449792, while the sum is 59.

The spelling of 400874977643 in words is "four hundred billion, eight hundred seventy-four million, nine hundred seventy-seven thousand, six hundred forty-three".