97998742381 has 8 divisors (see below), whose sum is σ = 98418499200. Its totient is φ = 97579067040.

The previous prime is 97998742357. The next prime is 97998742409. The reversal of 97998742381 is 18324789979.

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

It is a cyclic number.

It is not a de Polignac number, because 97998742381 - 2³¹ = 95851258733 is a prime.

It is a super-2 number, since 2×97998742381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97998742301) by changing a digit.

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, 4791066 + ... + 4811476.

It is an arithmetic number, because the mean of its divisors is an integer number (12302312400).

Almost surely, 2^97998742381 is an apocalyptic number.

It is an amenable number.

97998742381 is a deficient number, since it is larger than the sum of its proper divisors (419756819).

97998742381 is a wasteful number, since it uses less digits than its factorization.

97998742381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40739.

The product of its digits is 54867456, while the sum is 67.

The spelling of 97998742381 in words is "ninety-seven billion, nine hundred ninety-eight million, seven hundred forty-two thousand, three hundred eighty-one".