400004020011402 has 64 divisors (see below), whose sum is σ = 895395602505600. Its totient is φ = 132360026901120.

The previous prime is 400004020011389. The next prime is 400004020011499. The reversal of 400004020011402 is 204110020400004.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 883309377 + ... + 883762107.

It is an arithmetic number, because the mean of its divisors is an integer number (13990556289150).

Almost surely, 2^{400004020011402} is an apocalyptic number.

400004020011402 is an abundant number, since it is smaller than the sum of its proper divisors (495391582494198).

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

400004020011402 is a wasteful number, since it uses less digits than its factorization.

400004020011402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572308 (or 572302 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 400004020011402 its reverse (204110020400004), we get a palindrome (604114040411406).

The spelling of 400004020011402 in words is "four hundred trillion, four billion, twenty million, eleven thousand, four hundred two".