73699147512 has 128 divisors (see below), whose sum is σ = 208610688000. Its totient is φ = 24103889280.

The previous prime is 73699147471. The next prime is 73699147513. The reversal of 73699147512 is 21574199637.

73699147512 is a `hidden beast` number, since 7 + 36 + 9 + 91 + 4 + 7 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73699147513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2409837 + ... + 2440227.

It is an arithmetic number, because the mean of its divisors is an integer number (1629771000).

Almost surely, 2^73699147512 is an apocalyptic number.

73699147512 is a gapful number since it is divisible by the number (72) 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 73699147512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104305344000).

73699147512 is an abundant number, since it is smaller than the sum of its proper divisors (134911540488).

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

73699147512 is a wasteful number, since it uses less digits than its factorization.

73699147512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30618 (or 30608 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 73699147512 in words is "seventy-three billion, six hundred ninety-nine million, one hundred forty-seven thousand, five hundred twelve".