74774851272 has 240 divisors, whose sum is σ = 241145110800. Its totient is φ = 21465725760.

The previous prime is 74774851223. The next prime is 74774851279. The reversal of 74774851272 is 27215847747.

It is a happy number.

74774851272 is a `hidden beast` number, since 7 + 477 + 48 + 5 + 127 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (74774851279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2558679 + ... + 2587737.

It is an arithmetic number, because the mean of its divisors is an integer number (1004771295).

Almost surely, 2^74774851272 is an apocalyptic number.

74774851272 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 74774851272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120572555400).

74774851272 is an abundant number, since it is smaller than the sum of its proper divisors (166370259528).

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

74774851272 is a wasteful number, since it uses less digits than its factorization.

74774851272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29126 (or 29094 counting only the distinct ones).

The product of its digits is 6146560, while the sum is 54.

The spelling of 74774851272 in words is "seventy-four billion, seven hundred seventy-four million, eight hundred fifty-one thousand, two hundred seventy-two".