1165404367655 has 12 divisors (see below), whose sum is σ = 1537177993176. Its totient is φ = 847566812400.

The previous prime is 1165404367651. The next prime is 1165404367723. The reversal of 1165404367655 is 5567634045611.

It is not a de Polignac number, because 1165404367655 - 2² = 1165404367651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1165404367597 and 1165404367606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165404367651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 963143501 + ... + 963144710.

It is an arithmetic number, because the mean of its divisors is an integer number (128098166098).

Almost surely, 2^{1165404367655} is an apocalyptic number.

1165404367655 is a deficient number, since it is larger than the sum of its proper divisors (371773625521).

1165404367655 is a wasteful number, since it uses less digits than its factorization.

1165404367655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926288238 (or 1926288227 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 1165404367655 in words is "one trillion, one hundred sixty-five billion, four hundred four million, three hundred sixty-seven thousand, six hundred fifty-five".