74554900420 has 576 divisors, whose sum is σ = 222396088320. Its totient is φ = 20626099200.

The previous prime is 74554900403. The next prime is 74554900423. The reversal of 74554900420 is 2400945547.

It is a super-2 number, since 2×74554900420² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74554900423) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 587046397 + ... + 587046523.

It is an arithmetic number, because the mean of its divisors is an integer number (386104320).

Almost surely, 2^74554900420 is an apocalyptic number.

74554900420 is a gapful number since it is divisible by the number (70) 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 74554900420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111198044160).

74554900420 is an abundant number, since it is smaller than the sum of its proper divisors (147841187900).

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

74554900420 is a wasteful number, since it uses less digits than its factorization.

74554900420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 74554900420 in words is "seventy-four billion, five hundred fifty-four million, nine hundred thousand, four hundred twenty".