97978820001 has 8 divisors (see below), whose sum is σ = 130643782944. Its totient is φ = 65316535200.

The previous prime is 97978819973. The next prime is 97978820039. The reversal of 97978820001 is 10002887979.

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

It is not a de Polignac number, because 97978820001 - 2¹¹ = 97978817953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97978820101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582556 + ... + 731661.

It is an arithmetic number, because the mean of its divisors is an integer number (16330472868).

Almost surely, 2^97978820001 is an apocalyptic number.

It is an amenable number.

97978820001 is a deficient number, since it is larger than the sum of its proper divisors (32664962943).

97978820001 is a wasteful number, since it uses less digits than its factorization.

97978820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339071.

The product of its (nonzero) digits is 508032, while the sum is 51.

The spelling of 97978820001 in words is "ninety-seven billion, nine hundred seventy-eight million, eight hundred twenty thousand, one".