971213121312180 has 192 divisors, whose sum is σ = 2769249059039232. Its totient is φ = 254268441377280.

The previous prime is 971213121312167. The next prime is 971213121312193. The reversal of 971213121312180 is 81213121312179.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (971213121312167) and next prime (971213121312193).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14719554790 + ... + 14719620770.

It is an arithmetic number, because the mean of its divisors is an integer number (14423172182496).

Almost surely, 2^{971213121312180} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971213121312180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384624529519616).

971213121312180 is an abundant number, since it is smaller than the sum of its proper divisors (1798035937727052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971213121312180 is a wasteful number, since it uses less digits than its factorization.

971213121312180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78294 (or 78292 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 971213121312180 in words is "nine hundred seventy-one trillion, two hundred thirteen billion, one hundred twenty-one million, three hundred twelve thousand, one hundred eighty".