73071388872 has 48 divisors (see below), whose sum is σ = 205231375440. Its totient is φ = 24357128976.

The previous prime is 73071388853. The next prime is 73071388879. The reversal of 73071388872 is 27888317037.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (73071388879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18792138 + ... + 18796025.

It is an arithmetic number, because the mean of its divisors is an integer number (4275653655).

Almost surely, 2^73071388872 is an apocalyptic number.

73071388872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

73071388872 is an abundant number, since it is smaller than the sum of its proper divisors (132159986568).

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

73071388872 is a wasteful number, since it uses less digits than its factorization.

73071388872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37588184 (or 37588168 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 73071388872 in words is "seventy-three billion, seventy-one million, three hundred eighty-eight thousand, eight hundred seventy-two".