97197155278 has 8 divisors (see below), whose sum is σ = 147849194160. Its totient is φ = 47914090560.

The previous prime is 97197155273. The next prime is 97197155281. The reversal of 97197155278 is 87255179179.

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 (97197155273) 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, 342243363 + ... + 342243646.

It is an arithmetic number, because the mean of its divisors is an integer number (18481149270).

Almost surely, 2^97197155278 is an apocalyptic number.

97197155278 is a deficient number, since it is larger than the sum of its proper divisors (50652038882).

97197155278 is a wasteful number, since it uses less digits than its factorization.

97197155278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684487082.

The product of its digits is 11113200, while the sum is 61.

The spelling of 97197155278 in words is "ninety-seven billion, one hundred ninety-seven million, one hundred fifty-five thousand, two hundred seventy-eight".