97989735251201 has 4 divisors (see below), whose sum is σ = 97990253792004. Its totient is φ = 97989216710400.

The previous prime is 97989735251173. The next prime is 97989735251203. The reversal of 97989735251201 is 10215253798979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35693443411201 + 62296291840000 = 5974399^2 + 7892800^2 .

It is a cyclic number.

It is not a de Polignac number, because 97989735251201 - 2²⁶ = 97989668142337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97989735251203) 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, 258986840 + ... + 259364921.

It is an arithmetic number, because the mean of its divisors is an integer number (24497563448001).

Almost surely, 2^{97989735251201} is an apocalyptic number.

It is an amenable number.

97989735251201 is a deficient number, since it is larger than the sum of its proper divisors (518540803).

97989735251201 is a wasteful number, since it uses less digits than its factorization.

97989735251201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518540802.

The product of its (nonzero) digits is 85730400, while the sum is 68.

The spelling of 97989735251201 in words is "ninety-seven trillion, nine hundred eighty-nine billion, seven hundred thirty-five million, two hundred fifty-one thousand, two hundred one".