8157278772803 has 4 divisors (see below), whose sum is σ = 8157290921640. Its totient is φ = 8157266623968.

The previous prime is 8157278772761. The next prime is 8157278772823. The reversal of 8157278772803 is 3082778727518.

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

It is a cyclic number.

It is not a de Polignac number, because 8157278772803 - 2³⁴ = 8140098903619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8157278772803.

It is not an unprimeable number, because it can be changed into a prime (8157278772823) 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, 5004425 + ... + 6431082.

It is an arithmetic number, because the mean of its divisors is an integer number (2039322730410).

Almost surely, 2^{8157278772803} is an apocalyptic number.

8157278772803 is a deficient number, since it is larger than the sum of its proper divisors (12148837).

8157278772803 is a wasteful number, since it uses less digits than its factorization.

8157278772803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148836.

The product of its (nonzero) digits is 73758720, while the sum is 65.

The spelling of 8157278772803 in words is "eight trillion, one hundred fifty-seven billion, two hundred seventy-eight million, seven hundred seventy-two thousand, eight hundred three".