400677278512 has 40 divisors (see below), whose sum is σ = 895065453216. Its totient is φ = 170199192576.

The previous prime is 400677278483. The next prime is 400677278537. The reversal of 400677278512 is 215872776004.

It is a super-3 number, since 3×400677278512³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15816883 + ... + 15842194.

Almost surely, 2^400677278512 is an apocalyptic number.

It is an amenable number.

400677278512 is an abundant number, since it is smaller than the sum of its proper divisors (494388174704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400677278512 is a wasteful number, since it uses less digits than its factorization.

400677278512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31659205 (or 31659199 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 400677278512 in words is "four hundred billion, six hundred seventy-seven million, two hundred seventy-eight thousand, five hundred twelve".