74117875986 has 400 divisors, whose sum is σ = 224013224160. Its totient is φ = 18101180160.

The previous prime is 74117875973. The next prime is 74117875999. The reversal of 74117875986 is 68957871147.

74117875986 is a `hidden beast` number, since 7 + 411 + 78 + 75 + 9 + 86 = 666.

It is an interprime number because it is at equal distance from previous prime (74117875973) and next prime (74117875999).

It is a super-3 number, since 3×74117875986³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 72735385 + ... + 72736403.

Almost surely, 2^74117875986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74117875986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112006612080).

74117875986 is an abundant number, since it is smaller than the sum of its proper divisors (149895348174).

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

74117875986 is a wasteful number, since it uses less digits than its factorization.

74117875986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1059 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 63.

The spelling of 74117875986 in words is "seventy-four billion, one hundred seventeen million, eight hundred seventy-five thousand, nine hundred eighty-six".