69720713990 has 32 divisors (see below), whose sum is σ = 137165923584. Its totient is φ = 25401093120.

The previous prime is 69720713989. The next prime is 69720714067. The reversal of 69720713990 is 9931702796.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6609599 + ... + 6620138.

It is an arithmetic number, because the mean of its divisors is an integer number (4286435112).

Almost surely, 2^69720713990 is an apocalyptic number.

69720713990 is a deficient number, since it is larger than the sum of its proper divisors (67445209594).

69720713990 is a wasteful number, since it uses less digits than its factorization.

69720713990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13229792.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The spelling of 69720713990 in words is "sixty-nine billion, seven hundred twenty million, seven hundred thirteen thousand, nine hundred ninety".