2127689901 has 24 divisors (see below), whose sum is σ = 3279419520. Its totient is φ = 1325388096.

The previous prime is 2127689899. The next prime is 2127689903. The reversal of 2127689901 is 1099867212.

It is an interprime number because it is at equal distance from previous prime (2127689899) and next prime (2127689903).

It is not a de Polignac number, because 2127689901 - 2¹ = 2127689899 is a prime.

It is a super-3 number, since 3×2127689901³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127689903) 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, 72741 + ... + 97706.

It is an arithmetic number, because the mean of its divisors is an integer number (136642480).

Almost surely, 2^2127689901 is an apocalyptic number.

It is an amenable number.

2127689901 is a deficient number, since it is larger than the sum of its proper divisors (1151729619).

2127689901 is a wasteful number, since it uses less digits than its factorization.

2127689901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170545 (or 170542 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 2127689901 is about 46126.8891320453. The cubic root of 2127689901 is about 1286.1830366304.

The spelling of 2127689901 in words is "two billion, one hundred twenty-seven million, six hundred eighty-nine thousand, nine hundred one".