77757507406747 has 16 divisors (see below), whose sum is σ = 91427584763392. Its totient is φ = 64755149405760.

The previous prime is 77757507406717. The next prime is 77757507406753. The reversal of 77757507406747 is 74760470575777.

It is a cyclic number.

It is not a de Polignac number, because 77757507406747 - 2⁷ = 77757507406619 is a prime.

It is a super-2 number, since 2×77757507406747² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (73).

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 77757507406747.

It is not an unprimeable number, because it can be changed into a prime (77757507406717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1135542879 + ... + 1135611352.

It is an arithmetic number, because the mean of its divisors is an integer number (5714224047712).

Almost surely, 2^{77757507406747} is an apocalyptic number.

77757507406747 is a deficient number, since it is larger than the sum of its proper divisors (13670077356645).

77757507406747 is a wasteful number, since it uses less digits than its factorization.

77757507406747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271154378.

The product of its (nonzero) digits is 1976503200, while the sum is 73.

The spelling of 77757507406747 in words is "seventy-seven trillion, seven hundred fifty-seven billion, five hundred seven million, four hundred six thousand, seven hundred forty-seven".