99723180947 has 8 divisors (see below), whose sum is σ = 107402104320. Its totient is φ = 92045387520.

The previous prime is 99723180941. The next prime is 99723180961. The reversal of 99723180947 is 74908132799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99723180947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99723180941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94547 + ... + 456492.

It is an arithmetic number, because the mean of its divisors is an integer number (13425263040).

Almost surely, 2^99723180947 is an apocalyptic number.

99723180947 is a deficient number, since it is larger than the sum of its proper divisors (7678923373).

99723180947 is a wasteful number, since it uses less digits than its factorization.

99723180947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564973.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 99723180947 in words is "ninety-nine billion, seven hundred twenty-three million, one hundred eighty thousand, nine hundred forty-seven".