40640652501 has 16 divisors (see below), whose sum is σ = 55053209088. Its totient is φ = 26661769200.

The previous prime is 40640652487. The next prime is 40640652527. The reversal of 40640652501 is 10525604604.

It is a de Polignac number, because none of the positive numbers 2^k-40640652501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40640652551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91056 + ... + 299286.

It is an arithmetic number, because the mean of its divisors is an integer number (3440825568).

Almost surely, 2^40640652501 is an apocalyptic number.

It is an amenable number.

40640652501 is a deficient number, since it is larger than the sum of its proper divisors (14412556587).

40640652501 is a wasteful number, since it uses less digits than its factorization.

40640652501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209272.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 40640652501 in words is "forty billion, six hundred forty million, six hundred fifty-two thousand, five hundred one".