1177557777077 has 4 divisors (see below), whose sum is σ = 1284608484096. Its totient is φ = 1070507070060.

The previous prime is 1177557776987. The next prime is 1177557777091. The reversal of 1177557777077 is 7707777557711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1177557777077 - 2²² = 1177553582773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1177557776998 and 1177557777016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1177557777577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53525353493 + ... + 53525353514.

It is an arithmetic number, because the mean of its divisors is an integer number (321152121024).

Almost surely, 2^{1177557777077} is an apocalyptic number.

It is an amenable number.

1177557777077 is a deficient number, since it is larger than the sum of its proper divisors (107050707019).

1177557777077 is a wasteful number, since it uses less digits than its factorization.

1177557777077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107050707018.

The product of its (nonzero) digits is 144120025, while the sum is 68.

The spelling of 1177557777077 in words is "one trillion, one hundred seventy-seven billion, five hundred fifty-seven million, seven hundred seventy-seven thousand, seventy-seven".