146120877891 has 48 divisors (see below), whose sum is σ = 222145953120. Its totient is φ = 92462653440.

The previous prime is 146120877863. The next prime is 146120877901. The reversal of 146120877891 is 198778021641.

146120877891 is a `hidden beast` number, since 1 + 461 + 20 + 8 + 7 + 78 + 91 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-146120877891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146120877491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2077191 + ... + 2146383.

It is an arithmetic number, because the mean of its divisors is an integer number (4628040690).

Almost surely, 2^146120877891 is an apocalyptic number.

146120877891 is a deficient number, since it is larger than the sum of its proper divisors (76025075229).

146120877891 is a wasteful number, since it uses less digits than its factorization.

146120877891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69396 (or 69393 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 146120877891 in words is "one hundred forty-six billion, one hundred twenty million, eight hundred seventy-seven thousand, eight hundred ninety-one".