77703947971 has 8 divisors (see below), whose sum is σ = 83685952224. Its totient is φ = 71722626240.

The previous prime is 77703947969. The next prime is 77703947999. The reversal of 77703947971 is 17974930777.

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

It is a cyclic number.

It is not a de Polignac number, because 77703947971 - 2¹ = 77703947969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77703947071) 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, 79410 + ... + 402136.

It is an arithmetic number, because the mean of its divisors is an integer number (10460744028).

Almost surely, 2^77703947971 is an apocalyptic number.

77703947971 is a deficient number, since it is larger than the sum of its proper divisors (5982004253).

77703947971 is a wasteful number, since it uses less digits than its factorization.

77703947971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341261.

The product of its (nonzero) digits is 16336404, while the sum is 61.

The spelling of 77703947971 in words is "seventy-seven billion, seven hundred three million, nine hundred forty-seven thousand, nine hundred seventy-one".