40152131597 has 4 divisors (see below), whose sum is σ = 40566071196. Its totient is φ = 39738192000.

The previous prime is 40152131587. The next prime is 40152131611. The reversal of 40152131597 is 79513125104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19202753476 + 20949378121 = 138574^2 + 144739^2 .

It is a cyclic number.

It is not a de Polignac number, because 40152131597 - 2¹⁶ = 40152066061 is a prime.

It is a super-2 number, since 2×40152131597² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40152131597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40152131587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206969654 + ... + 206969847.

It is an arithmetic number, because the mean of its divisors is an integer number (10141517799).

Almost surely, 2^40152131597 is an apocalyptic number.

It is an amenable number.

40152131597 is a deficient number, since it is larger than the sum of its proper divisors (413939599).

40152131597 is an equidigital number, since it uses as much as digits as its factorization.

40152131597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413939598.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 40152131597 in words is "forty billion, one hundred fifty-two million, one hundred thirty-one thousand, five hundred ninety-seven".