400126262875 has 16 divisors (see below), whose sum is σ = 499850683488. Its totient is φ = 319784916000.

The previous prime is 400126262873. The next prime is 400126262917. The reversal of 400126262875 is 578262621004.

It is a happy number.

It is not a de Polignac number, because 400126262875 - 2¹ = 400126262873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400126262873) 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, 1453341 + ... + 1706590.

It is an arithmetic number, because the mean of its divisors is an integer number (31240667718).

Almost surely, 2^400126262875 is an apocalyptic number.

400126262875 is a deficient number, since it is larger than the sum of its proper divisors (99724420613).

400126262875 is a wasteful number, since it uses less digits than its factorization.

400126262875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160959 (or 3160949 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

Adding to 400126262875 its reverse (578262621004), we get a palindrome (978388883879).

The spelling of 400126262875 in words is "four hundred billion, one hundred twenty-six million, two hundred sixty-two thousand, eight hundred seventy-five".