77495388359477 has 6 divisors (see below), whose sum is σ = 85180881420054. Its totient is φ = 70450353053960.

The previous prime is 77495388359423. The next prime is 77495388359621.

77495388359477 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 55471899618916 + 22023488740561 = 7447946^2 + 4692919^2 .

It is not a de Polignac number, because 77495388359477 - 2³⁰ = 77494314617653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77495388359407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320228877398 + ... + 320228877639.

It is an arithmetic number, because the mean of its divisors is an integer number (14196813570009).

Almost surely, 2^{77495388359477} is an apocalyptic number.

It is an amenable number.

77495388359477 is a deficient number, since it is larger than the sum of its proper divisors (7685493060577).

77495388359477 is a wasteful number, since it uses less digits than its factorization.

77495388359477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640457755059 (or 640457755048 counting only the distinct ones).

The product of its digits is 44808422400, while the sum is 86.

The spelling of 77495388359477 in words is "seventy-seven trillion, four hundred ninety-five billion, three hundred eighty-eight million, three hundred fifty-nine thousand, four hundred seventy-seven".