74720413455 has 32 divisors (see below), whose sum is σ = 119828636928. Its totient is φ = 39759014400.

The previous prime is 74720413451. The next prime is 74720413541. The reversal of 74720413455 is 55431402747.

It is not a de Polignac number, because 74720413455 - 2² = 74720413451 is a prime.

It is a super-2 number, since 2×74720413455² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74720413451) 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 31 ways as a sum of consecutive naturals, for example, 13531095 + ... + 13536615.

It is an arithmetic number, because the mean of its divisors is an integer number (3744644904).

Almost surely, 2^74720413455 is an apocalyptic number.

74720413455 is a deficient number, since it is larger than the sum of its proper divisors (45108223473).

74720413455 is a wasteful number, since it uses less digits than its factorization.

74720413455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 74720413455 in words is "seventy-four billion, seven hundred twenty million, four hundred thirteen thousand, four hundred fifty-five".