1165979685477 has 16 divisors (see below), whose sum is σ = 1590906540608. Its totient is φ = 759188868480.

The previous prime is 1165979685469. The next prime is 1165979685487. The reversal of 1165979685477 is 7745869795611.

It is not a de Polignac number, because 1165979685477 - 2³ = 1165979685469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1165979685399 and 1165979685408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165979685407) 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, 1552953 + ... + 2177985.

It is an arithmetic number, because the mean of its divisors is an integer number (99431658788).

Almost surely, 2^{1165979685477} is an apocalyptic number.

It is an amenable number.

1165979685477 is a deficient number, since it is larger than the sum of its proper divisors (424926855131).

1165979685477 is a wasteful number, since it uses less digits than its factorization.

1165979685477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639540.

The product of its digits is 800150400, while the sum is 75.

The spelling of 1165979685477 in words is "one trillion, one hundred sixty-five billion, nine hundred seventy-nine million, six hundred eighty-five thousand, four hundred seventy-seven".