1321973146176 has 56 divisors (see below), whose sum is σ = 3649795437504. Its totient is φ = 421498682880.

The previous prime is 1321973146163. The next prime is 1321973146183. The reversal of 1321973146176 is 6716413791231.

It is a happy number.

It is a super-2 number, since 2×1321973146176² (a number of 25 digits) contains 22 as substring.

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, 149675515 + ... + 149684346.

Almost surely, 2^{1321973146176} is an apocalyptic number.

1321973146176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1321973146176 is an abundant number, since it is smaller than the sum of its proper divisors (2327822291328).

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

1321973146176 is a wasteful number, since it uses less digits than its factorization.

1321973146176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299359899 (or 299359889 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The spelling of 1321973146176 in words is "one trillion, three hundred twenty-one billion, nine hundred seventy-three million, one hundred forty-six thousand, one hundred seventy-six".