97678309707 has 12 divisors (see below), whose sum is σ = 153917336664. Its totient is φ = 59198975520.

The previous prime is 97678309697. The next prime is 97678309709. The reversal of 97678309707 is 70790387679.

It is not a de Polignac number, because 97678309707 - 2⁶ = 97678309643 is a prime.

It is a super-2 number, since 2×97678309707² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97678309709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 493324698 + ... + 493324895.

It is an arithmetic number, because the mean of its divisors is an integer number (12826444722).

Almost surely, 2^97678309707 is an apocalyptic number.

97678309707 is a deficient number, since it is larger than the sum of its proper divisors (56239026957).

97678309707 is a wasteful number, since it uses less digits than its factorization.

97678309707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986649610 (or 986649607 counting only the distinct ones).

The product of its (nonzero) digits is 28005264, while the sum is 63.

The spelling of 97678309707 in words is "ninety-seven billion, six hundred seventy-eight million, three hundred nine thousand, seven hundred seven".