97437697998 has 32 divisors (see below), whose sum is σ = 206356369824. Its totient is φ = 30566065152.

The previous prime is 97437697991. The next prime is 97437698003. The reversal of 97437697998 is 89979673479.

97437697998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×97437697998² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97437697991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399836 + ... + 1467792.

It is an arithmetic number, because the mean of its divisors is an integer number (6448636557).

Almost surely, 2^97437697998 is an apocalyptic number.

97437697998 is an abundant number, since it is smaller than the sum of its proper divisors (108918671826).

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

97437697998 is a wasteful number, since it uses less digits than its factorization.

97437697998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82036.

The product of its digits is 1296243648, while the sum is 78.

The spelling of 97437697998 in words is "ninety-seven billion, four hundred thirty-seven million, six hundred ninety-seven thousand, nine hundred ninety-eight".