97923921952 has 96 divisors (see below), whose sum is σ = 208461496320. Its totient is φ = 45147336960.

The previous prime is 97923921923. The next prime is 97923921959. The reversal of 97923921952 is 25912932979.

It is a super-2 number, since 2×97923921952² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97923921959) 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, 5992449 + ... + 6008767.

It is an arithmetic number, because the mean of its divisors is an integer number (2171473920).

Almost surely, 2^97923921952 is an apocalyptic number.

97923921952 is a gapful number since it is divisible by the number (92) 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 97923921952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104230748160).

97923921952 is an abundant number, since it is smaller than the sum of its proper divisors (110537574368).

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

97923921952 is a wasteful number, since it uses less digits than its factorization.

97923921952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16646 (or 16638 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 58.

The spelling of 97923921952 in words is "ninety-seven billion, nine hundred twenty-three million, nine hundred twenty-one thousand, nine hundred fifty-two".