40251503121 has 16 divisors (see below), whose sum is σ = 53894955840. Its totient is φ = 26721414720.

The previous prime is 40251503111. The next prime is 40251503213. The reversal of 40251503121 is 12130515204.

It is a happy number.

It is not a de Polignac number, because 40251503121 - 2⁹ = 40251502609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40251503091 and 40251503100.

It is not an unprimeable number, because it can be changed into a prime (40251503111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712450 + ... + 766868.

It is an arithmetic number, because the mean of its divisors is an integer number (3368434740).

Almost surely, 2^40251503121 is an apocalyptic number.

It is an amenable number.

40251503121 is a deficient number, since it is larger than the sum of its proper divisors (13643452719).

40251503121 is a wasteful number, since it uses less digits than its factorization.

40251503121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55456.

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 40251503121 in words is "forty billion, two hundred fifty-one million, five hundred three thousand, one hundred twenty-one".