71893690394 has 8 divisors (see below), whose sum is σ = 107844416820. Its totient is φ = 35945551456.

The previous prime is 71893690373. The next prime is 71893690433. The reversal of 71893690394 is 49309639817.

It can be written as a sum of positive squares in 2 ways, for example, as 71442340369 + 451350025 = 267287^2 + 21245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575849 + ... + 689484.

Almost surely, 2^71893690394 is an apocalyptic number.

71893690394 is a deficient number, since it is larger than the sum of its proper divisors (35950726426).

71893690394 is a wasteful number, since it uses less digits than its factorization.

71893690394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293744.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 71893690394 in words is "seventy-one billion, eight hundred ninety-three million, six hundred ninety thousand, three hundred ninety-four".