271081978 has 4 divisors (see below), whose sum is σ = 406622970. Its totient is φ = 135540988.

The previous prime is 271081973. The next prime is 271081991. The reversal of 271081978 is 879180172.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147938569 + 123143409 = 12163^2 + 11097^2 .

It is not an unprimeable number, because it can be changed into a prime (271081973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67770493 + ... + 67770496.

Almost surely, 2^271081978 is an apocalyptic number.

271081978 is a deficient number, since it is larger than the sum of its proper divisors (135540992).

271081978 is a wasteful number, since it uses less digits than its factorization.

271081978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135540991.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 271081978 is about 16464.5673493111. The cubic root of 271081978 is about 647.1926085245.

The spelling of 271081978 in words is "two hundred seventy-one million, eighty-one thousand, nine hundred seventy-eight".