1155238021632 has 40 divisors (see below), whose sum is σ = 3077626296096. Its totient is φ = 385079340032.

The previous prime is 1155238021627. The next prime is 1155238021643. The reversal of 1155238021632 is 2361208325511.

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, 376052508 + ... + 376055579.

Almost surely, 2^{1155238021632} is an apocalyptic number.

1155238021632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1155238021632 is an abundant number, since it is smaller than the sum of its proper divisors (1922388274464).

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

1155238021632 is an frugal number, since it uses more digits than its factorization.

1155238021632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752108108 (or 752108092 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 1155238021632 in words is "one trillion, one hundred fifty-five billion, two hundred thirty-eight million, twenty-one thousand, six hundred thirty-two".