73742523081 has 16 divisors (see below), whose sum is σ = 100852086720. Its totient is φ = 47912109120.

The previous prime is 73742523073. The next prime is 73742523097. The reversal of 73742523081 is 18032524737.

It is a happy number.

It is not a de Polignac number, because 73742523081 - 2³ = 73742523073 is a prime.

It is a super-2 number, since 2×73742523081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73742523011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1828515 + ... + 1868408.

It is an arithmetic number, because the mean of its divisors is an integer number (6303255420).

Almost surely, 2^73742523081 is an apocalyptic number.

It is an amenable number.

73742523081 is a deficient number, since it is larger than the sum of its proper divisors (27109563639).

73742523081 is a wasteful number, since it uses less digits than its factorization.

73742523081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697096.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 73742523081 in words is "seventy-three billion, seven hundred forty-two million, five hundred twenty-three thousand, eighty-one".