161211376 has 10 divisors (see below), whose sum is σ = 312347072. Its totient is φ = 80605680.

The previous prime is 161211361. The next prime is 161211397. The reversal of 161211376 is 673112161.

It is a super-4 number, since 4×161211376⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5037840 + ... + 5037871.

Almost surely, 2^161211376 is an apocalyptic number.

161211376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161211376 is a deficient number, since it is larger than the sum of its proper divisors (151135696).

161211376 is a wasteful number, since it uses less digits than its factorization.

161211376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075719 (or 10075713 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 161211376 is about 12696.9041896046. The cubic root of 161211376 is about 544.2501552786.

The spelling of 161211376 in words is "one hundred sixty-one million, two hundred eleven thousand, three hundred seventy-six".