80161947 has 8 divisors (see below), whose sum is σ = 118758480. Its totient is φ = 53441280.

The previous prime is 80161927. The next prime is 80161973. The reversal of 80161947 is 74916108.

It is not a de Polignac number, because 80161947 - 2⁶ = 80161883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80161927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484454 + ... + 1484507.

It is an arithmetic number, because the mean of its divisors is an integer number (14844810).

Almost surely, 2^80161947 is an apocalyptic number.

80161947 is a deficient number, since it is larger than the sum of its proper divisors (38596533).

80161947 is a wasteful number, since it uses less digits than its factorization.

80161947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968970 (or 2968964 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 80161947 is about 8953.3204455107. The cubic root of 80161947 is about 431.1774955613.

The spelling of 80161947 in words is "eighty million, one hundred sixty-one thousand, nine hundred forty-seven".