1165554011356 has 48 divisors (see below), whose sum is σ = 2472339506112. Its totient is φ = 469357056000.

The previous prime is 1165554011333. The next prime is 1165554011437. The reversal of 1165554011356 is 6531104555611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1751065 + ... + 2323216.

It is an arithmetic number, because the mean of its divisors is an integer number (51507073044).

Almost surely, 2^{1165554011356} is an apocalyptic number.

It is an amenable number.

1165554011356 is an abundant number, since it is smaller than the sum of its proper divisors (1306785494756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165554011356 is a wasteful number, since it uses less digits than its factorization.

1165554011356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074910 (or 4074908 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 43.

Adding to 1165554011356 its reverse (6531104555611), we get a palindrome (7696658566967).

The spelling of 1165554011356 in words is "one trillion, one hundred sixty-five billion, five hundred fifty-four million, eleven thousand, three hundred fifty-six".