79900703069 has 54 divisors (see below), whose sum is σ = 94894102170. Its totient is φ = 67211569920.

The previous prime is 79900703041. The next prime is 79900703081. The reversal of 79900703069 is 96030700997.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 45680512900 + 34220190169 = 213730^2 + 184987^2 .

It is not a de Polignac number, because 79900703069 - 2¹² = 79900698973 is a prime.

It is a super-2 number, since 2×79900703069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79900703009) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 156975587 + ... + 156976095.

Almost surely, 2^79900703069 is an apocalyptic number.

It is an amenable number.

79900703069 is a deficient number, since it is larger than the sum of its proper divisors (14993399101).

79900703069 is a wasteful number, since it uses less digits than its factorization.

79900703069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 50.

The spelling of 79900703069 in words is "seventy-nine billion, nine hundred million, seven hundred three thousand, sixty-nine".