97859709090 has 256 divisors, whose sum is σ = 313110282240. Its totient is φ = 21432349440.

The previous prime is 97859709071. The next prime is 97859709097. The reversal of 97859709090 is 9090795879.

It is not an unprimeable number, because it can be changed into a prime (97859709097) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1787707 + ... + 1841633.

It is an arithmetic number, because the mean of its divisors is an integer number (1223087040).

Almost surely, 2^97859709090 is an apocalyptic number.

97859709090 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 97859709090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156555141120).

97859709090 is an abundant number, since it is smaller than the sum of its proper divisors (215250573150).

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

97859709090 is a wasteful number, since it uses less digits than its factorization.

97859709090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54014 (or 54008 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 63.

The spelling of 97859709090 in words is "ninety-seven billion, eight hundred fifty-nine million, seven hundred nine thousand, ninety".