40077071857 has 2 divisors, whose sum is σ = 40077071858. Its totient is φ = 40077071856.

The previous prime is 40077071789. The next prime is 40077071873. The reversal of 40077071857 is 75817077004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28780783201 + 11296288656 = 169649^2 + 106284^2 .

It is a cyclic number.

It is not a de Polignac number, because 40077071857 - 2²⁷ = 39942854129 is a prime.

It is a super-2 number, since 2×40077071857² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40077011857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20038535928 + 20038535929.

It is an arithmetic number, because the mean of its divisors is an integer number (20038535929).

Almost surely, 2^40077071857 is an apocalyptic number.

It is an amenable number.

40077071857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40077071857 is an equidigital number, since it uses as much as digits as its factorization.

40077071857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384160, while the sum is 46.

The spelling of 40077071857 in words is "forty billion, seventy-seven million, seventy-one thousand, eight hundred fifty-seven".