400140305051 has 16 divisors (see below), whose sum is σ = 425807756640. Its totient is φ = 374714242560.

The previous prime is 400140305009. The next prime is 400140305063. The reversal of 400140305051 is 150503041004.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400140305051 is a prime.

It is a super-2 number, since 2×400140305051² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400140305251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2638745 + ... + 2786261.

It is an arithmetic number, because the mean of its divisors is an integer number (26612984790).

Almost surely, 2^400140305051 is an apocalyptic number.

400140305051 is a deficient number, since it is larger than the sum of its proper divisors (25667451589).

400140305051 is a wasteful number, since it uses less digits than its factorization.

400140305051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148334.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 400140305051 its reverse (150503041004), we get a palindrome (550643346055).

The spelling of 400140305051 in words is "four hundred billion, one hundred forty million, three hundred five thousand, fifty-one".