2171392659072 has 512 divisors, whose sum is σ = 8021293056000. Its totient is φ = 562963820544.

The previous prime is 2171392659053. The next prime is 2171392659127. The reversal of 2171392659072 is 2709562931712.

2171392659072 is a `hidden beast` number, since 2 + 17 + 1 + 39 + 2 + 6 + 590 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 18496753 + ... + 18613775.

It is an arithmetic number, because the mean of its divisors is an integer number (15666588000).

Almost surely, 2^{2171392659072} 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 2171392659072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4010646528000).

2171392659072 is an abundant number, since it is smaller than the sum of its proper divisors (5849900396928).

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

2171392659072 is a wasteful number, since it uses less digits than its factorization.

2171392659072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117125 (or 117107 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 2171392659072 in words is "two trillion, one hundred seventy-one billion, three hundred ninety-two million, six hundred fifty-nine thousand, seventy-two".