40161157248857 has 2 divisors, whose sum is σ = 40161157248858. Its totient is φ = 40161157248856.

The previous prime is 40161157248703. The next prime is 40161157248871. The reversal of 40161157248857 is 75884275116104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25065282562576 + 15095874686281 = 5006524^2 + 3885341^2 .

It is a cyclic number.

It is not a de Polignac number, because 40161157248857 - 2³⁴ = 40143977379673 is a prime.

It is a super-2 number, since 2×40161157248857² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40161157248796 and 40161157248805.

It is not a weakly prime, because it can be changed into another prime (40161157241857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20080578624428 + 20080578624429.

It is an arithmetic number, because the mean of its divisors is an integer number (20080578624429).

Almost surely, 2^{40161157248857} is an apocalyptic number.

It is an amenable number.

40161157248857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40161157248857 is an equidigital number, since it uses as much as digits as its factorization.

40161157248857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15052800, while the sum is 59.

The spelling of 40161157248857 in words is "forty trillion, one hundred sixty-one billion, one hundred fifty-seven million, two hundred forty-eight thousand, eight hundred fifty-seven".