161377476 has 96 divisors (see below), whose sum is σ = 433859328. Its totient is φ = 46295040.

The previous prime is 161377451. The next prime is 161377483. The reversal of 161377476 is 674773161.

161377476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 146560 + ... + 147656.

It is an arithmetic number, because the mean of its divisors is an integer number (4519368).

Almost surely, 2^161377476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161377476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216929664).

161377476 is an abundant number, since it is smaller than the sum of its proper divisors (272481852).

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

161377476 is a wasteful number, since it uses less digits than its factorization.

161377476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1179 counting only the distinct ones).

The product of its digits is 148176, while the sum is 42.

The square root of 161377476 is about 12703.4434701777. The cubic root of 161377476 is about 544.4370091755.

The spelling of 161377476 in words is "one hundred sixty-one million, three hundred seventy-seven thousand, four hundred seventy-six".