77360811461557 has 16 divisors (see below), whose sum is σ = 87177185579008. Its totient is φ = 68159768595840.

The previous prime is 77360811461543. The next prime is 77360811461567. The reversal of 77360811461557 is 75516411806377.

It is a cyclic number.

It is not a de Polignac number, because 77360811461557 - 2⁷ = 77360811461429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77360811461495 and 77360811461504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77360811461567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314780933 + ... + 1314839770.

It is an arithmetic number, because the mean of its divisors is an integer number (5448574098688).

Almost surely, 2^{77360811461557} is an apocalyptic number.

It is an amenable number.

77360811461557 is a deficient number, since it is larger than the sum of its proper divisors (9816374117451).

77360811461557 is a wasteful number, since it uses less digits than its factorization.

77360811461557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629620820.

The product of its (nonzero) digits is 29635200, while the sum is 61.

The spelling of 77360811461557 in words is "seventy-seven trillion, three hundred sixty billion, eight hundred eleven million, four hundred sixty-one thousand, five hundred fifty-seven".