97678729072 has 20 divisors (see below), whose sum is σ = 197480909520. Its totient is φ = 46715913728.

The previous prime is 97678729051. The next prime is 97678729123. The reversal of 97678729072 is 27092787679.

It is a super-2 number, since 2×97678729072² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97678728995 and 97678729013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132715297 + ... + 132716032.

It is an arithmetic number, because the mean of its divisors is an integer number (9874045476).

Almost surely, 2^97678729072 is an apocalyptic number.

97678729072 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

97678729072 is the 167058-th centered heptagonal number.

It is an amenable number.

97678729072 is an abundant number, since it is smaller than the sum of its proper divisors (99802180448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97678729072 is a wasteful number, since it uses less digits than its factorization.

97678729072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265431360 (or 265431354 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 64.

The spelling of 97678729072 in words is "ninety-seven billion, six hundred seventy-eight million, seven hundred twenty-nine thousand, seventy-two".