73500099961 has 4 divisors (see below), whose sum is σ = 73807632000. Its totient is φ = 73192567924.

The previous prime is 73500099863. The next prime is 73500099973. The reversal of 73500099961 is 16999000537.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16999000537 = 23581 ⋅720877.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73500099961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73500099161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153765661 + ... + 153766138.

It is an arithmetic number, because the mean of its divisors is an integer number (18451908000).

Almost surely, 2^73500099961 is an apocalyptic number.

It is an amenable number.

73500099961 is a deficient number, since it is larger than the sum of its proper divisors (307532039).

73500099961 is a wasteful number, since it uses less digits than its factorization.

73500099961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307532038.

The product of its (nonzero) digits is 459270, while the sum is 49.

The spelling of 73500099961 in words is "seventy-three billion, five hundred million, ninety-nine thousand, nine hundred sixty-one".