73122961860 has 144 divisors (see below), whose sum is σ = 251440512960. Its totient is φ = 17052145920.

The previous prime is 73122961843. The next prime is 73122961861. The reversal of 73122961860 is 6816922137.

73122961860 is a `hidden beast` number, since 7 + 3 + 1 + 2 + 29 + 618 + 6 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (73122961861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 777886 + ... + 866805.

Almost surely, 2^73122961860 is an apocalyptic number.

It is an amenable number.

73122961860 is an abundant number, since it is smaller than the sum of its proper divisors (178317551100).

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

73122961860 is a wasteful number, since it uses less digits than its factorization.

73122961860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644738 (or 1644733 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 73122961860 in words is "seventy-three billion, one hundred twenty-two million, nine hundred sixty-one thousand, eight hundred sixty".