40517365751 has 2 divisors, whose sum is σ = 40517365752. Its totient is φ = 40517365750.

The previous prime is 40517365699. The next prime is 40517365799. The reversal of 40517365751 is 15756371504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40517365751 - 2²⁶ = 40450256887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40517365351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20258682875 + 20258682876.

It is an arithmetic number, because the mean of its divisors is an integer number (20258682876).

Almost surely, 2^40517365751 is an apocalyptic number.

40517365751 is a deficient number, since it is larger than the sum of its proper divisors (1).

40517365751 is an equidigital number, since it uses as much as digits as its factorization.

40517365751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 40517365751 in words is "forty billion, five hundred seventeen million, three hundred sixty-five thousand, seven hundred fifty-one".