2164501297749 has 16 divisors (see below), whose sum is σ = 3299266229760. Its totient is φ = 1236490932720.

The previous prime is 2164501297729. The next prime is 2164501297843. The reversal of 2164501297749 is 9477921054612.

It is not a de Polignac number, because 2164501297749 - 2¹⁷ = 2164501166677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164501297709) 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, 15217179 + ... + 15358760.

It is an arithmetic number, because the mean of its divisors is an integer number (206204139360).

Almost surely, 2^{2164501297749} is an apocalyptic number.

It is an amenable number.

2164501297749 is a deficient number, since it is larger than the sum of its proper divisors (1134764932011).

2164501297749 is a wasteful number, since it uses less digits than its factorization.

2164501297749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30579320.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 2164501297749 in words is "two trillion, one hundred sixty-four billion, five hundred one million, two hundred ninety-seven thousand, seven hundred forty-nine".