75244379220 has 96 divisors (see below), whose sum is σ = 234310809600. Its totient is φ = 20046552192.

The previous prime is 75244379173. The next prime is 75244379239. The reversal of 75244379220 is 2297344257.

75244379220 is a `hidden beast` number, since 7 + 52 + 4 + 4 + 379 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522886 + ... + 651074.

It is an arithmetic number, because the mean of its divisors is an integer number (2440737600).

Almost surely, 2^75244379220 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 75244379220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117155404800).

75244379220 is an abundant number, since it is smaller than the sum of its proper divisors (159066430380).

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

75244379220 is a wasteful number, since it uses less digits than its factorization.

75244379220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129294 (or 129286 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 75244379220 in words is "seventy-five billion, two hundred forty-four million, three hundred seventy-nine thousand, two hundred twenty".