77605498413 has 12 divisors (see below), whose sum is σ = 116248565888. Its totient is φ = 51736998780.

The previous prime is 77605498351. The next prime is 77605498417. The reversal of 77605498413 is 31489450677.

77605498413 is a `hidden beast` number, since 7 + 7 + 6 + 0 + 549 + 84 + 13 = 666.

It is not a de Polignac number, because 77605498413 - 2⁹ = 77605497901 is a prime.

It is a super-2 number, since 2×77605498413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77605498413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77605498417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159681853 + ... + 159682338.

Almost surely, 2^77605498413 is an apocalyptic number.

It is an amenable number.

77605498413 is a deficient number, since it is larger than the sum of its proper divisors (38643067475).

77605498413 is an equidigital number, since it uses as much as digits as its factorization.

77605498413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319364206 (or 319364194 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 77605498413 in words is "seventy-seven billion, six hundred five million, four hundred ninety-eight thousand, four hundred thirteen".