78174613381632 has 160 divisors (see below), whose sum is σ = 217326635919360. Its totient is φ = 24924125614080.

The previous prime is 78174613381577. The next prime is 78174613381661. The reversal of 78174613381632 is 23618331647187.

It is a super-2 number, since 2×78174613381632² (a number of 29 digits) contains 22 as substring.

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, 1210269657 + ... + 1210334247.

It is an arithmetic number, because the mean of its divisors is an integer number (1358291474496).

Almost surely, 2^{78174613381632} 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 78174613381632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108663317959680).

78174613381632 is an abundant number, since it is smaller than the sum of its proper divisors (139152022537728).

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

78174613381632 is a wasteful number, since it uses less digits than its factorization.

78174613381632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98894 (or 98878 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 78174613381632 in words is "seventy-eight trillion, one hundred seventy-four billion, six hundred thirteen million, three hundred eighty-one thousand, six hundred thirty-two".