161066402 has 32 divisors (see below), whose sum is σ = 284981760. Its totient is φ = 66830400.

The previous prime is 161066371. The next prime is 161066407. The reversal of 161066402 is 204660161.

It is a happy number.

161066402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161066407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123152 + ... + 124452.

It is an arithmetic number, because the mean of its divisors is an integer number (8905680).

Almost surely, 2^161066402 is an apocalyptic number.

161066402 is a deficient number, since it is larger than the sum of its proper divisors (123915358).

161066402 is a wasteful number, since it uses less digits than its factorization.

161066402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 161066402 is about 12691.1938760701. The cubic root of 161066402 is about 544.0869621106.

The spelling of 161066402 in words is "one hundred sixty-one million, sixty-six thousand, four hundred two".