97251412861 has 4 divisors (see below), whose sum is σ = 97252150972. Its totient is φ = 97250674752.

The previous prime is 97251412837. The next prime is 97251412901. The reversal of 97251412861 is 16821415279.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33712632100 + 63538780761 = 183610^2 + 252069^2 .

It is a cyclic number.

It is not a de Polignac number, because 97251412861 - 2¹¹ = 97251410813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97251412561) 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, 111510 + ... + 454903.

It is an arithmetic number, because the mean of its divisors is an integer number (24313037743).

Almost surely, 2^97251412861 is an apocalyptic number.

It is an amenable number.

97251412861 is a deficient number, since it is larger than the sum of its proper divisors (738111).

97251412861 is a wasteful number, since it uses less digits than its factorization.

97251412861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738110.

The product of its digits is 241920, while the sum is 46.

The spelling of 97251412861 in words is "ninety-seven billion, two hundred fifty-one million, four hundred twelve thousand, eight hundred sixty-one".