1172401154472 has 64 divisors (see below), whose sum is σ = 2986753305600. Its totient is φ = 383393984960.

The previous prime is 1172401154467. The next prime is 1172401154501. The reversal of 1172401154472 is 2744511042711.

It is a self number, because there is not a number n which added to its sum of digits gives 1172401154472.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147888 + ... + 1538399.

It is an arithmetic number, because the mean of its divisors is an integer number (46668020400).

Almost surely, 2^{1172401154472} is an apocalyptic number.

1172401154472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172401154472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1493376652800).

1172401154472 is an abundant number, since it is smaller than the sum of its proper divisors (1814352151128).

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

1172401154472 is a wasteful number, since it uses less digits than its factorization.

1172401154472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686846 (or 1686842 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 1172401154472 in words is "one trillion, one hundred seventy-two billion, four hundred one million, one hundred fifty-four thousand, four hundred seventy-two".