1161266253600 has 72 divisors (see below), whose sum is σ = 3779921663280. Its totient is φ = 309671000320.

The previous prime is 1161266253551. The next prime is 1161266253607. The reversal of 1161266253600 is 63526621611.

It is not an unprimeable number, because it can be changed into a prime (1161266253607) 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, 241928070 + ... + 241932869.

It is an arithmetic number, because the mean of its divisors is an integer number (52498911990).

Almost surely, 2^{1161266253600} is an apocalyptic number.

1161266253600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161266253600 is an abundant number, since it is smaller than the sum of its proper divisors (2618655409680).

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

1161266253600 is a wasteful number, since it uses less digits than its factorization.

1161266253600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483860962 (or 483860949 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 1161266253600 in words is "one trillion, one hundred sixty-one billion, two hundred sixty-six million, two hundred fifty-three thousand, six hundred".