1172531487380 has 24 divisors (see below), whose sum is σ = 2686163044320. Its totient is φ = 426375086240.

The previous prime is 1172531487359. The next prime is 1172531487409. The reversal of 1172531487380 is 837841352711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2664844070 + ... + 2664844509.

It is an arithmetic number, because the mean of its divisors is an integer number (111923460180).

Almost surely, 2^{1172531487380} is an apocalyptic number.

1172531487380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172531487380 is an abundant number, since it is smaller than the sum of its proper divisors (1513631556940).

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

1172531487380 is a wasteful number, since it uses less digits than its factorization.

1172531487380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329688599 (or 5329688597 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 1172531487380 in words is "one trillion, one hundred seventy-two billion, five hundred thirty-one million, four hundred eighty-seven thousand, three hundred eighty".