71766981903963 has 4 divisors (see below), whose sum is σ = 95689309205288. Its totient is φ = 47844654602640.

The previous prime is 71766981903913. The next prime is 71766981904001. The reversal of 71766981903963 is 36930918966717.

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

It is not a de Polignac number, because 71766981903963 - 2⁹ = 71766981903451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71766981903913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11961163650658 + ... + 11961163650663.

It is an arithmetic number, because the mean of its divisors is an integer number (23922327301322).

Almost surely, 2^{71766981903963} is an apocalyptic number.

71766981903963 is a deficient number, since it is larger than the sum of its proper divisors (23922327301325).

71766981903963 is a wasteful number, since it uses less digits than its factorization.

71766981903963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23922327301324.

The product of its (nonzero) digits is 555532992, while the sum is 75.

The spelling of 71766981903963 in words is "seventy-one trillion, seven hundred sixty-six billion, nine hundred eighty-one million, nine hundred three thousand, nine hundred sixty-three".