74309751072 has 54 divisors (see below), whose sum is σ = 211331511027. Its totient is φ = 24768374976.

The previous prime is 74309751053. The next prime is 74309751077. The reversal of 74309751072 is 27015790347.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

74309751072 is a `hidden beast` number, since 7 + 43 + 0 + 97 + 510 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37154875536 + 37154875536 = 192756^2 + 192756^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=192756.

It is not an unprimeable number, because it can be changed into a prime (74309751077) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4618113 + ... + 4634175.

Almost surely, 2^74309751072 is an apocalyptic number.

74309751072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

74309751072 is an abundant number, since it is smaller than the sum of its proper divisors (137021759955).

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

74309751072 is an frugal number, since it uses more digits than its factorization.

74309751072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32142 (or 16068 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 74309751072 in words is "seventy-four billion, three hundred nine million, seven hundred fifty-one thousand, seventy-two".