400451051235154 has 4 divisors (see below), whose sum is σ = 600676576852734. Its totient is φ = 200225525617576.

The previous prime is 400451051235149. The next prime is 400451051235199. The reversal of 400451051235154 is 451532150154004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 294778921942129 + 105672129293025 = 17169127^2 + 10279695^2 .

It is a super-2 number, since 2×400451051235154² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100112762808787 + ... + 100112762808790.

Almost surely, 2^{400451051235154} is an apocalyptic number.

400451051235154 is a deficient number, since it is larger than the sum of its proper divisors (200225525617580).

400451051235154 is a wasteful number, since it uses less digits than its factorization.

400451051235154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200225525617579.

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 400451051235154 in words is "four hundred trillion, four hundred fifty-one billion, fifty-one million, two hundred thirty-five thousand, one hundred fifty-four".