97732223136 has 120 divisors (see below), whose sum is σ = 287767396224. Its totient is φ = 32538913920.

The previous prime is 97732223107. The next prime is 97732223137. The reversal of 97732223136 is 63132223779.

97732223136 is a `hidden beast` number, since 9 + 7 + 7 + 322 + 2 + 313 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 97732223091 and 97732223100.

It is not an unprimeable number, because it can be changed into a prime (97732223137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2215051 + ... + 2258741.

Almost surely, 2^97732223136 is an apocalyptic number.

97732223136 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97732223136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143883698112).

97732223136 is an abundant number, since it is smaller than the sum of its proper divisors (190035173088).

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

97732223136 is a wasteful number, since it uses less digits than its factorization.

97732223136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44576 (or 44559 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The spelling of 97732223136 in words is "ninety-seven billion, seven hundred thirty-two million, two hundred twenty-three thousand, one hundred thirty-six".