400256136030 has 64 divisors (see below), whose sum is σ = 1021602481920. Its totient is φ = 100013873664.

The previous prime is 400256136023. The next prime is 400256136053. The reversal of 400256136030 is 30631652004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1612900 + ... + 1844439.

It is an arithmetic number, because the mean of its divisors is an integer number (15962538780).

Almost surely, 2^400256136030 is an apocalyptic number.

400256136030 is an abundant number, since it is smaller than the sum of its proper divisors (621346345890).

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

400256136030 is a wasteful number, since it uses less digits than its factorization.

400256136030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457593.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 400256136030 its reverse (30631652004), we get a palindrome (430887788034).

The spelling of 400256136030 in words is "four hundred billion, two hundred fifty-six million, one hundred thirty-six thousand, thirty".