40157945213 has 2 divisors, whose sum is σ = 40157945214. Its totient is φ = 40157945212.

The previous prime is 40157945203. The next prime is 40157945263. The reversal of 40157945213 is 31254975104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39488843524 + 669101689 = 198718^2 + 25867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40157945213 is a prime.

It is a super-2 number, since 2×40157945213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40157945203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078972606 + 20078972607.

It is an arithmetic number, because the mean of its divisors is an integer number (20078972607).

Almost surely, 2^40157945213 is an apocalyptic number.

It is an amenable number.

40157945213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40157945213 is an equidigital number, since it uses as much as digits as its factorization.

40157945213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 40157945213 in words is "forty billion, one hundred fifty-seven million, nine hundred forty-five thousand, two hundred thirteen".