2172765977151 has 24 divisors (see below), whose sum is σ = 3676368409344. Its totient is φ = 1128709597680.

The previous prime is 2172765977099. The next prime is 2172765977209. The reversal of 2172765977151 is 1517795672712.

It is not a de Polignac number, because 2172765977151 - 2¹⁰ = 2172765976127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172765977051) 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, 671849335 + ... + 671852568.

It is an arithmetic number, because the mean of its divisors is an integer number (153182017056).

Almost surely, 2^{2172765977151} is an apocalyptic number.

2172765977151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2172765977151 is a deficient number, since it is larger than the sum of its proper divisors (1503602432193).

2172765977151 is a wasteful number, since it uses less digits than its factorization.

2172765977151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343701931 (or 1343701924 counting only the distinct ones).

The product of its digits is 12965400, while the sum is 60.

The spelling of 2172765977151 in words is "two trillion, one hundred seventy-two billion, seven hundred sixty-five million, nine hundred seventy-seven thousand, one hundred fifty-one".