2164745615157 has 12 divisors (see below), whose sum is σ = 3136718676780. Its totient is φ = 1438611174528.

The previous prime is 2164745615147. The next prime is 2164745615177. The reversal of 2164745615157 is 7515165474612.

2164745615157 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 7 + 4 + 5 + 615 + 15 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 166667246001 + 1998078369156 = 408249^2 + 1413534^2 .

It is not a de Polignac number, because 2164745615157 - 2¹⁰ = 2164745614133 is a prime.

It is a super-2 number, since 2×2164745615157² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164745615147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379377732 + ... + 379383437.

It is an arithmetic number, because the mean of its divisors is an integer number (261393223065).

Almost surely, 2^{2164745615157} is an apocalyptic number.

It is an amenable number.

2164745615157 is a deficient number, since it is larger than the sum of its proper divisors (971973061623).

2164745615157 is a wasteful number, since it uses less digits than its factorization.

2164745615157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758761492 (or 758761489 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The spelling of 2164745615157 in words is "two trillion, one hundred sixty-four billion, seven hundred forty-five million, six hundred fifteen thousand, one hundred fifty-seven".