1161055506015 has 24 divisors (see below), whose sum is σ = 2016595019088. Its totient is φ = 617968431360.

The previous prime is 1161055505999. The next prime is 1161055506029. The reversal of 1161055506015 is 5106055501611.

It is a happy number.

It is not a de Polignac number, because 1161055506015 - 2⁴ = 1161055505999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26252074 + ... + 26296263.

It is an arithmetic number, because the mean of its divisors is an integer number (84024792462).

Almost surely, 2^{1161055506015} is an apocalyptic number.

1161055506015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1161055506015 is a deficient number, since it is larger than the sum of its proper divisors (855539513073).

1161055506015 is a wasteful number, since it uses less digits than its factorization.

1161055506015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52548839 (or 52548836 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 1161055506015 in words is "one trillion, one hundred sixty-one billion, fifty-five million, five hundred six thousand, fifteen".