97211548079 has 4 divisors (see below), whose sum is σ = 97500009984. Its totient is φ = 96923086176.

The previous prime is 97211548051. The next prime is 97211548141. The reversal of 97211548079 is 97084511279.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97211548079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97211548079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97211548019) 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, 144230447 + ... + 144231120.

It is an arithmetic number, because the mean of its divisors is an integer number (24375002496).

Almost surely, 2^97211548079 is an apocalyptic number.

97211548079 is a deficient number, since it is larger than the sum of its proper divisors (288461905).

97211548079 is a wasteful number, since it uses less digits than its factorization.

97211548079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288461904.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 97211548079 in words is "ninety-seven billion, two hundred eleven million, five hundred forty-eight thousand, seventy-nine".