161276499 has 24 divisors (see below), whose sum is σ = 236500992. Its totient is φ = 105894000.

The previous prime is 161276461. The next prime is 161276513. The reversal of 161276499 is 994672161.

161276499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161276499 - 2⁸ = 161276243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161272499) 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, 214374 + ... + 215124.

It is an arithmetic number, because the mean of its divisors is an integer number (9854208).

Almost surely, 2^161276499 is an apocalyptic number.

161276499 is a deficient number, since it is larger than the sum of its proper divisors (75224493).

161276499 is a wasteful number, since it uses less digits than its factorization.

161276499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1084 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 161276499 is about 12699.4684534432. The cubic root of 161276499 is about 544.3234305694.

The spelling of 161276499 in words is "one hundred sixty-one million, two hundred seventy-six thousand, four hundred ninety-nine".