97991436733 has 8 divisors (see below), whose sum is σ = 100662775808. Its totient is φ = 95321304144.

The previous prime is 97991436713. The next prime is 97991436743. The reversal of 97991436733 is 33763419979.

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-97991436733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97991436713) 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, 135741 + ... + 463042.

It is an arithmetic number, because the mean of its divisors is an integer number (12582846976).

Almost surely, 2^97991436733 is an apocalyptic number.

It is an amenable number.

97991436733 is a deficient number, since it is larger than the sum of its proper divisors (2671339075).

97991436733 is a wasteful number, since it uses less digits than its factorization.

97991436733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603243.

The product of its digits is 23147208, while the sum is 61.

The spelling of 97991436733 in words is "ninety-seven billion, nine hundred ninety-one million, four hundred thirty-six thousand, seven hundred thirty-three".