78699498097 has 32 divisors (see below), whose sum is σ = 93891723264. Its totient is φ = 65126073600.

The previous prime is 78699498089. The next prime is 78699498121. The reversal of 78699498097 is 79089499687.

It is a cyclic number.

It is not a de Polignac number, because 78699498097 - 2³ = 78699498089 is a prime.

It is a super-2 number, since 2×78699498097² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78699498197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14298448 + ... + 14303950.

It is an arithmetic number, because the mean of its divisors is an integer number (2934116352).

Almost surely, 2^78699498097 is an apocalyptic number.

It is an amenable number.

78699498097 is a deficient number, since it is larger than the sum of its proper divisors (15192225167).

78699498097 is a wasteful number, since it uses less digits than its factorization.

78699498097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029.

The product of its (nonzero) digits is 493807104, while the sum is 76.

The spelling of 78699498097 in words is "seventy-eight billion, six hundred ninety-nine million, four hundred ninety-eight thousand, ninety-seven".