40347021413251 has 32 divisors (see below), whose sum is σ = 47268576432000. Its totient is φ = 33723434833920.

The previous prime is 40347021413207. The next prime is 40347021413261. The reversal of 40347021413251 is 15231412074304.

It is a cyclic number.

It is not a de Polignac number, because 40347021413251 - 2²⁵ = 40346987858819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40347021413251.

It is not an unprimeable number, because it can be changed into a prime (40347021413261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45066925 + ... + 45953473.

It is an arithmetic number, because the mean of its divisors is an integer number (1477143013500).

Almost surely, 2^{40347021413251} is an apocalyptic number.

40347021413251 is a deficient number, since it is larger than the sum of its proper divisors (6921555018749).

40347021413251 is a wasteful number, since it uses less digits than its factorization.

40347021413251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887359.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 40347021413251 its reverse (15231412074304), we get a palindrome (55578433487555).

The spelling of 40347021413251 in words is "forty trillion, three hundred forty-seven billion, twenty-one million, four hundred thirteen thousand, two hundred fifty-one".