97552210644 has 288 divisors, whose sum is σ = 320040564480. Its totient is φ = 24381886464.

The previous prime is 97552210607. The next prime is 97552210681. The reversal of 97552210644 is 44601225579.

97552210644 is a `hidden beast` number, since 9 + 75 + 522 + 10 + 6 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (97552210607) and next prime (97552210681).

It is a self number, because there is not a number n which added to its sum of digits gives 97552210644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4302682 + ... + 4325294.

It is an arithmetic number, because the mean of its divisors is an integer number (1111251960).

Almost surely, 2^97552210644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97552210644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160020282240).

97552210644 is an abundant number, since it is smaller than the sum of its proper divisors (222488353836).

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

97552210644 is a wasteful number, since it uses less digits than its factorization.

97552210644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22719 (or 22714 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 97552210644 in words is "ninety-seven billion, five hundred fifty-two million, two hundred ten thousand, six hundred forty-four".