97944991222437 has 24 divisors (see below), whose sum is σ = 148930822092000. Its totient is φ = 61856416659168.

The previous prime is 97944991222433. The next prime is 97944991222439. The reversal of 97944991222437 is 73422219944979.

97944991222437 is a `hidden beast` number, since 9 + 7 + 9 + 4 + 499 + 122 + 2 + 4 + 3 + 7 = 666.

It is not a de Polignac number, because 97944991222437 - 2² = 97944991222433 is a prime.

It is a super-2 number, since 2×97944991222437² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97944991222433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13597098 + ... + 19513355.

It is an arithmetic number, because the mean of its divisors is an integer number (6205450920500).

Almost surely, 2^{97944991222437} is an apocalyptic number.

It is an amenable number.

97944991222437 is a deficient number, since it is larger than the sum of its proper divisors (50985830869563).

97944991222437 is a wasteful number, since it uses less digits than its factorization.

97944991222437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33127777 (or 33127774 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 72.

The spelling of 97944991222437 in words is "ninety-seven trillion, nine hundred forty-four billion, nine hundred ninety-one million, two hundred twenty-two thousand, four hundred thirty-seven".