2172312508887 has 24 divisors (see below), whose sum is σ = 3144102386880. Its totient is φ = 1445294188800.

The previous prime is 2172312508879. The next prime is 2172312508913. The reversal of 2172312508887 is 7888052132712.

It is a happy number.

2172312508887 is a `hidden beast` number, since 2 + 1 + 7 + 231 + 250 + 88 + 87 = 666.

It is not a de Polignac number, because 2172312508887 - 2³ = 2172312508879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172312508787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15763539 + ... + 15900747.

It is an arithmetic number, because the mean of its divisors is an integer number (131004266120).

Almost surely, 2^{2172312508887} is an apocalyptic number.

2172312508887 is a deficient number, since it is larger than the sum of its proper divisors (971789877993).

2172312508887 is a wasteful number, since it uses less digits than its factorization.

2172312508887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140743 (or 140740 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 2172312508887 in words is "two trillion, one hundred seventy-two billion, three hundred twelve million, five hundred eight thousand, eight hundred eighty-seven".