74153574612 has 144 divisors (see below), whose sum is σ = 204878615760. Its totient is φ = 22611843072.

The previous prime is 74153574587. The next prime is 74153574617. The reversal of 74153574612 is 21647535147.

74153574612 is a `hidden beast` number, since 7 + 4 + 15 + 3 + 574 + 61 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 49481333136 + 24672241476 = 222444^2 + 157074^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74153574617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8933248 + ... + 8941544.

It is an arithmetic number, because the mean of its divisors is an integer number (1422768165).

Almost surely, 2^74153574612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74153574612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102439307880).

74153574612 is an abundant number, since it is smaller than the sum of its proper divisors (130725041148).

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

74153574612 is a wasteful number, since it uses less digits than its factorization.

74153574612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8459 (or 8428 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The spelling of 74153574612 in words is "seventy-four billion, one hundred fifty-three million, five hundred seventy-four thousand, six hundred twelve".