77757757674641 has 8 divisors (see below), whose sum is σ = 84826788291264. Its totient is φ = 70688750983920.

The previous prime is 77757757674601. The next prime is 77757757674643. The reversal of 77757757674641 is 14647675775777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77757757674641 - 2³⁰ = 77756683932817 is a prime.

It is a super-2 number, since 2×77757757674641² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77757757674643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187435 + ... + 12526991.

It is an arithmetic number, because the mean of its divisors is an integer number (10603348536408).

Almost surely, 2^{77757757674641} is an apocalyptic number.

It is an amenable number.

77757757674641 is a deficient number, since it is larger than the sum of its proper divisors (7069030616623).

77757757674641 is a wasteful number, since it uses less digits than its factorization.

77757757674641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11962951.

The product of its digits is 11859019200, while the sum is 80.

The spelling of 77757757674641 in words is "seventy-seven trillion, seven hundred fifty-seven billion, seven hundred fifty-seven million, six hundred seventy-four thousand, six hundred forty-one".