1157301021920 has 24 divisors (see below), whose sum is σ = 2734123664664. Its totient is φ = 462920408704.

The previous prime is 1157301021911. The next prime is 1157301021977. The reversal of 1157301021920 is 291201037511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616565534 + ... + 3616565853.

It is an arithmetic number, because the mean of its divisors is an integer number (113921819361).

Almost surely, 2^{1157301021920} is an apocalyptic number.

1157301021920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157301021920 is an abundant number, since it is smaller than the sum of its proper divisors (1576822642744).

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

1157301021920 is an equidigital number, since it uses as much as digits as its factorization.

1157301021920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7233131402 (or 7233131394 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 1157301021920 in words is "one trillion, one hundred fifty-seven billion, three hundred one million, twenty-one thousand, nine hundred twenty".