2971214191781 has 16 divisors (see below), whose sum is σ = 3256732942848. Its totient is φ = 2688271762800.

The previous prime is 2971214191747. The next prime is 2971214191819. The reversal of 2971214191781 is 1871914121792.

2971214191781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2971214191781 is a prime.

It is a super-2 number, since 2×2971214191781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971214193781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7043846 + ... + 7453736.

It is an arithmetic number, because the mean of its divisors is an integer number (203545808928).

Almost surely, 2^{2971214191781} is an apocalyptic number.

It is an amenable number.

2971214191781 is a deficient number, since it is larger than the sum of its proper divisors (285518751067).

2971214191781 is a wasteful number, since it uses less digits than its factorization.

2971214191781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413032.

The product of its digits is 508032, while the sum is 53.

The spelling of 2971214191781 in words is "two trillion, nine hundred seventy-one billion, two hundred fourteen million, one hundred ninety-one thousand, seven hundred eighty-one".