1173478709880 has 80 divisors (see below), whose sum is σ = 3944192341320. Its totient is φ = 312927655104.

The previous prime is 1173478709867. The next prime is 1173478709891. The reversal of 1173478709880 is 889078743711.

1173478709880 is a `hidden beast` number, since 1 + 1 + 7 + 3 + 478 + 70 + 98 + 8 + 0 = 666.

It is a super-2 number, since 2×1173478709880² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 181089154 + ... + 181095633.

Almost surely, 2^{1173478709880} is an apocalyptic number.

1173478709880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173478709880 is an abundant number, since it is smaller than the sum of its proper divisors (2770713631440).

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

1173478709880 is a wasteful number, since it uses less digits than its factorization.

1173478709880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362184810 (or 362184797 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 63.

The spelling of 1173478709880 in words is "one trillion, one hundred seventy-three billion, four hundred seventy-eight million, seven hundred nine thousand, eight hundred eighty".