97944991222438 has 8 divisors (see below), whose sum is σ = 146991203591688. Its totient is φ = 48947923358544.

The previous prime is 97944991222433. The next prime is 97944991222439. The reversal of 97944991222438 is 83422219944979.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 12286121356 + ... + 12286129327.

It is an arithmetic number, because the mean of its divisors is an integer number (18373900448961).

Almost surely, 2^{97944991222438} is an apocalyptic number.

97944991222438 is a deficient number, since it is larger than the sum of its proper divisors (49046212369250).

97944991222438 is a wasteful number, since it uses less digits than its factorization.

97944991222438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24572252678.

The product of its digits is 564350976, while the sum is 73.

The spelling of 97944991222438 in words is "ninety-seven trillion, nine hundred forty-four billion, nine hundred ninety-one million, two hundred twenty-two thousand, four hundred thirty-eight".