147999869172 has 48 divisors (see below), whose sum is σ = 383724909120. Its totient is φ = 49330519776.

The previous prime is 147999869167. The next prime is 147999869209. The reversal of 147999869172 is 271968999741.

147999869172 is a `hidden beast` number, since 1 + 479 + 9 + 9 + 86 + 9 + 1 + 72 = 666.

It is a super-2 number, since 2×147999869172² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 147999869172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2999203 + ... + 3048149.

It is an arithmetic number, because the mean of its divisors is an integer number (7994268940).

Almost surely, 2^147999869172 is an apocalyptic number.

147999869172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

147999869172 is an abundant number, since it is smaller than the sum of its proper divisors (235725039948).

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

147999869172 is a wasteful number, since it uses less digits than its factorization.

147999869172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76957 (or 76949 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 72.

The spelling of 147999869172 in words is "one hundred forty-seven billion, nine hundred ninety-nine million, eight hundred sixty-nine thousand, one hundred seventy-two".