97954724797 has 4 divisors (see below), whose sum is σ = 98263730556. Its totient is φ = 97645719040.

The previous prime is 97954724783. The next prime is 97954724801. The reversal of 97954724797 is 79742745979.

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 7494538041 + 90460186756 = 86571^2 + 300766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97954724797 is a prime.

It is a super-2 number, since 2×97954724797² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97954724717) 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, 154502404 + ... + 154503037.

It is an arithmetic number, because the mean of its divisors is an integer number (24565932639).

Almost surely, 2^97954724797 is an apocalyptic number.

It is an amenable number.

97954724797 is a deficient number, since it is larger than the sum of its proper divisors (309005759).

97954724797 is a wasteful number, since it uses less digits than its factorization.

97954724797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309005758.

The product of its digits is 280052640, while the sum is 70.

The spelling of 97954724797 in words is "ninety-seven billion, nine hundred fifty-four million, seven hundred twenty-four thousand, seven hundred ninety-seven".