40515515007 has 24 divisors (see below), whose sum is σ = 61293550080. Its totient is φ = 23762758800.

The previous prime is 40515514999. The next prime is 40515515021. The reversal of 40515515007 is 70051551504.

It is a happy number.

It is not a de Polignac number, because 40515515007 - 2³ = 40515514999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40515515107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1788957 + ... + 1811462.

It is an arithmetic number, because the mean of its divisors is an integer number (2553897920).

Almost surely, 2^40515515007 is an apocalyptic number.

40515515007 is a deficient number, since it is larger than the sum of its proper divisors (20778035073).

40515515007 is a wasteful number, since it uses less digits than its factorization.

40515515007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600475 (or 3600464 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 33.

The spelling of 40515515007 in words is "forty billion, five hundred fifteen million, five hundred fifteen thousand, seven".