40515515039 has 2 divisors, whose sum is σ = 40515515040. Its totient is φ = 40515515038.

The previous prime is 40515515023. The next prime is 40515515063. The reversal of 40515515039 is 93051551504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40515515039 - 2⁴ = 40515515023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40515514993 and 40515515011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40515515539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20257757519 + 20257757520.

It is an arithmetic number, because the mean of its divisors is an integer number (20257757520).

Almost surely, 2^40515515039 is an apocalyptic number.

40515515039 is a deficient number, since it is larger than the sum of its proper divisors (1).

40515515039 is an equidigital number, since it uses as much as digits as its factorization.

40515515039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 40515515039 in words is "forty billion, five hundred fifteen million, five hundred fifteen thousand, thirty-nine".