971746788461 has 4 divisors (see below), whose sum is σ = 984047380800. Its totient is φ = 959446196124.

The previous prime is 971746788427. The next prime is 971746788469. The reversal of 971746788461 is 164887647179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-971746788461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 971746788391 and 971746788400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971746788469) 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, 6150296051 + ... + 6150296208.

It is an arithmetic number, because the mean of its divisors is an integer number (246011845200).

Almost surely, 2^971746788461 is an apocalyptic number.

It is an amenable number.

971746788461 is a deficient number, since it is larger than the sum of its proper divisors (12300592339).

971746788461 is a wasteful number, since it uses less digits than its factorization.

971746788461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12300592338.

The product of its digits is 113799168, while the sum is 68.

The spelling of 971746788461 in words is "nine hundred seventy-one billion, seven hundred forty-six million, seven hundred eighty-eight thousand, four hundred sixty-one".