971121211488 has 36 divisors (see below), whose sum is σ = 2761625945988. Its totient is φ = 323707070400.

The previous prime is 971121211481. The next prime is 971121211493. The reversal of 971121211488 is 884112121179.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971121211481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1685974038 + ... + 1685974613.

It is an arithmetic number, because the mean of its divisors is an integer number (76711831833).

Almost surely, 2^971121211488 is an apocalyptic number.

It is an amenable number.

971121211488 is an abundant number, since it is smaller than the sum of its proper divisors (1790504734500).

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

971121211488 is a wasteful number, since it uses less digits than its factorization.

971121211488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371948667 (or 3371948656 counting only the distinct ones).

The product of its digits is 64512, while the sum is 45.

The spelling of 971121211488 in words is "nine hundred seventy-one billion, one hundred twenty-one million, two hundred eleven thousand, four hundred eighty-eight".