786540057631 has 2 divisors, whose sum is σ = 786540057632. Its totient is φ = 786540057630.

The previous prime is 786540057577. The next prime is 786540057649. The reversal of 786540057631 is 136750045687.

It is a happy number.

786540057631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (136750045687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 786540057631 - 2²³ = 786531669023 is a prime.

It is a super-2 number, since 2×786540057631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (786540052631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393270028815 + 393270028816.

It is an arithmetic number, because the mean of its divisors is an integer number (393270028816).

Almost surely, 2^786540057631 is an apocalyptic number.

786540057631 is a deficient number, since it is larger than the sum of its proper divisors (1).

786540057631 is an equidigital number, since it uses as much as digits as its factorization.

786540057631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 786540057631 in words is "seven hundred eighty-six billion, five hundred forty million, fifty-seven thousand, six hundred thirty-one".