97213404500 has 24 divisors (see below), whose sum is σ = 212314076520. Its totient is φ = 38885361600.

The previous prime is 97213404479. The next prime is 97213404521. The reversal of 97213404500 is 540431279.

It is an interprime number because it is at equal distance from previous prime (97213404479) and next prime (97213404521).

It can be written as a sum of positive squares in 4 ways, for example, as 15698586436 + 81514818064 = 125294^2 + 285508^2 .

It is a super-3 number, since 3×97213404500³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97212905 + ... + 97213904.

It is an arithmetic number, because the mean of its divisors is an integer number (8846419855).

Almost surely, 2^97213404500 is an apocalyptic number.

It is an amenable number.

97213404500 is an abundant number, since it is smaller than the sum of its proper divisors (115100672020).

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

97213404500 is a wasteful number, since it uses less digits than its factorization.

97213404500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194426828 (or 194426816 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 97213404500 its reverse (540431279), we get a palindrome (97753835779).

The spelling of 97213404500 in words is "ninety-seven billion, two hundred thirteen million, four hundred four thousand, five hundred".