71950949194 has 4 divisors (see below), whose sum is σ = 107926423794. Its totient is φ = 35975474596.

The previous prime is 71950949143. The next prime is 71950949219. The reversal of 71950949194 is 49194905917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49194905917 = 10223 ⋅4812179.

It can be written as a sum of positive squares in only one way, i.e., 64904186169 + 7046763025 = 254763^2 + 83945^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17987737297 + ... + 17987737300.

Almost surely, 2^71950949194 is an apocalyptic number.

71950949194 is a deficient number, since it is larger than the sum of its proper divisors (35975474600).

71950949194 is a wasteful number, since it uses less digits than its factorization.

71950949194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35975474599.

The product of its (nonzero) digits is 3674160, while the sum is 58.

The spelling of 71950949194 in words is "seventy-one billion, nine hundred fifty million, nine hundred forty-nine thousand, one hundred ninety-four".