40645261715 has 4 divisors (see below), whose sum is σ = 48774314064. Its totient is φ = 32516209368.

The previous prime is 40645261703. The next prime is 40645261747. The reversal of 40645261715 is 51716254604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40645261715 - 2⁶ = 40645261651 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4064526167 + ... + 4064526176.

It is an arithmetic number, because the mean of its divisors is an integer number (12193578516).

Almost surely, 2^40645261715 is an apocalyptic number.

40645261715 is a deficient number, since it is larger than the sum of its proper divisors (8129052349).

40645261715 is an equidigital number, since it uses as much as digits as its factorization.

40645261715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8129052348.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 40645261715 in words is "forty billion, six hundred forty-five million, two hundred sixty-one thousand, seven hundred fifteen".