2157132108264 has 128 divisors (see below), whose sum is σ = 6508750617600. Its totient is φ = 581983211520.

The previous prime is 2157132108181. The next prime is 2157132108281. The reversal of 2157132108264 is 4628012317512.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120697 + ... + 2080584.

It is an arithmetic number, because the mean of its divisors is an integer number (50849614200).

Almost surely, 2^{2157132108264} is an apocalyptic number.

2157132108264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157132108264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254375308800).

2157132108264 is an abundant number, since it is smaller than the sum of its proper divisors (4351618509336).

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

2157132108264 is a wasteful number, since it uses less digits than its factorization.

2157132108264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201623 (or 2201619 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 2157132108264 in words is "two trillion, one hundred fifty-seven billion, one hundred thirty-two million, one hundred eight thousand, two hundred sixty-four".