400512512355 has 8 divisors (see below), whose sum is σ = 640820019792. Its totient is φ = 213606673248.

The previous prime is 400512512341. The next prime is 400512512369. The reversal of 400512512355 is 553215215004.

It is an interprime number because it is at equal distance from previous prime (400512512341) and next prime (400512512369).

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

It is not a de Polignac number, because 400512512355 - 2⁷ = 400512512227 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, 13350417064 + ... + 13350417093.

It is an arithmetic number, because the mean of its divisors is an integer number (80102502474).

Almost surely, 2^400512512355 is an apocalyptic number.

400512512355 is a deficient number, since it is larger than the sum of its proper divisors (240307507437).

400512512355 is a wasteful number, since it uses less digits than its factorization.

400512512355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700834165.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 400512512355 its reverse (553215215004), we get a palindrome (953727727359).

The spelling of 400512512355 in words is "four hundred billion, five hundred twelve million, five hundred twelve thousand, three hundred fifty-five".