400138272293751 has 6 divisors (see below), whose sum is σ = 577977504424320. Its totient is φ = 266758848195828.

The previous prime is 400138272293699. The next prime is 400138272293849. The reversal of 400138272293751 is 157392272831004.

400138272293751 is a `hidden beast` number, since 4 + 0 + 0 + 1 + 38 + 272 + 293 + 7 + 51 = 666.

It is not a de Polignac number, because 400138272293751 - 2²⁵ = 400138238739319 is a prime.

It is a super-2 number, since 2×400138272293751² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400138272293251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22229904016311 + ... + 22229904016328.

It is an arithmetic number, because the mean of its divisors is an integer number (96329584070720).

Almost surely, 2^{400138272293751} is an apocalyptic number.

400138272293751 is a deficient number, since it is larger than the sum of its proper divisors (177839232130569).

400138272293751 is a wasteful number, since it uses less digits than its factorization.

400138272293751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44459808032645 (or 44459808032642 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 400138272293751 in words is "four hundred trillion, one hundred thirty-eight billion, two hundred seventy-two million, two hundred ninety-three thousand, seven hundred fifty-one".