79710877690 has 8 divisors (see below), whose sum is σ = 143479579860. Its totient is φ = 31884351072.

The previous prime is 79710877681. The next prime is 79710877699. The reversal of 79710877690 is 9677801797.

It is an interprime number because it is at equal distance from previous prime (79710877681) and next prime (79710877699).

It can be written as a sum of positive squares in 2 ways, for example, as 70377192369 + 9333685321 = 265287^2 + 96611^2 .

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

It is a super-2 number, since 2×79710877690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79710877699) 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, 3985543875 + ... + 3985543894.

Almost surely, 2^79710877690 is an apocalyptic number.

79710877690 is a deficient number, since it is larger than the sum of its proper divisors (63768702170).

79710877690 is a wasteful number, since it uses less digits than its factorization.

79710877690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7971087776.

The product of its (nonzero) digits is 9335088, while the sum is 61.

The spelling of 79710877690 in words is "seventy-nine billion, seven hundred ten million, eight hundred seventy-seven thousand, six hundred ninety".