97861937860 has 48 divisors (see below), whose sum is σ = 222659369856. Its totient is φ = 35985341952.

The previous prime is 97861937851. The next prime is 97861937869. The reversal of 97861937860 is 6873916879.

It is an interprime number because it is at equal distance from previous prime (97861937851) and next prime (97861937869).

It is a junction number, because it is equal to n+sod(n) for n = 97861937792 and 97861937801.

It is not an unprimeable number, because it can be changed into a prime (97861937869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3332232 + ... + 3361471.

It is an arithmetic number, because the mean of its divisors is an integer number (4638736872).

Almost surely, 2^97861937860 is an apocalyptic number.

It is an amenable number.

97861937860 is an abundant number, since it is smaller than the sum of its proper divisors (124797431996).

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

97861937860 is a wasteful number, since it uses less digits than its factorization.

97861937860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6693772 (or 6693770 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 97861937860 in words is "ninety-seven billion, eight hundred sixty-one million, nine hundred thirty-seven thousand, eight hundred sixty".