40572342697 has 2 divisors, whose sum is σ = 40572342698. Its totient is φ = 40572342696.

The previous prime is 40572342689. The next prime is 40572342739. The reversal of 40572342697 is 79624327504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21782512921 + 18789829776 = 147589^2 + 137076^2 .

It is a cyclic number.

It is not a de Polignac number, because 40572342697 - 2³ = 40572342689 is a prime.

It is a super-2 number, since 2×40572342697² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40572342697.

It is not a weakly prime, because it can be changed into another prime (40572342667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20286171348 + 20286171349.

It is an arithmetic number, because the mean of its divisors is an integer number (20286171349).

Almost surely, 2^40572342697 is an apocalyptic number.

It is an amenable number.

40572342697 is a deficient number, since it is larger than the sum of its proper divisors (1).

40572342697 is an equidigital number, since it uses as much as digits as its factorization.

40572342697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 40572342697 in words is "forty billion, five hundred seventy-two million, three hundred forty-two thousand, six hundred ninety-seven".