40477193657 has 2 divisors, whose sum is σ = 40477193658. Its totient is φ = 40477193656.

The previous prime is 40477193633. The next prime is 40477193717. The reversal of 40477193657 is 75639177404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33215427001 + 7261766656 = 182251^2 + 85216^2 .

It is a cyclic number.

It is not a de Polignac number, because 40477193657 - 2¹⁸ = 40476931513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40477193599 and 40477193608.

It is not a weakly prime, because it can be changed into another prime (40477193357) 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, 20238596828 + 20238596829.

It is an arithmetic number, because the mean of its divisors is an integer number (20238596829).

Almost surely, 2^40477193657 is an apocalyptic number.

It is an amenable number.

40477193657 is a deficient number, since it is larger than the sum of its proper divisors (1).

40477193657 is an equidigital number, since it uses as much as digits as its factorization.

40477193657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 40477193657 in words is "forty billion, four hundred seventy-seven million, one hundred ninety-three thousand, six hundred fifty-seven".