40390518507 has 8 divisors (see below), whose sum is σ = 54037827984. Its totient is φ = 26835110688.

The previous prime is 40390518503. The next prime is 40390518527. The reversal of 40390518507 is 70581509304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40390518507 - 2² = 40390518503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40390518503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22974388 + ... + 22976145.

It is an arithmetic number, because the mean of its divisors is an integer number (6754728498).

Almost surely, 2^40390518507 is an apocalyptic number.

40390518507 is a deficient number, since it is larger than the sum of its proper divisors (13647309477).

40390518507 is a wasteful number, since it uses less digits than its factorization.

40390518507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45950829.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 40390518507 in words is "forty billion, three hundred ninety million, five hundred eighteen thousand, five hundred seven".