400123746545 has 8 divisors (see below), whose sum is σ = 505419469440. Its totient is φ = 303251681520.

The previous prime is 400123746527. The next prime is 400123746557. The reversal of 400123746545 is 545647321004.

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

It is not a de Polignac number, because 400123746545 - 2⁸ = 400123746289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2105914361 + ... + 2105914550.

It is an arithmetic number, because the mean of its divisors is an integer number (63177433680).

Almost surely, 2^400123746545 is an apocalyptic number.

It is an amenable number.

400123746545 is a deficient number, since it is larger than the sum of its proper divisors (105295722895).

400123746545 is a wasteful number, since it uses less digits than its factorization.

400123746545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211828935.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 400123746545 in words is "four hundred billion, one hundred twenty-three million, seven hundred forty-six thousand, five hundred forty-five".