78823049151 has 32 divisors (see below), whose sum is σ = 131055206400. Its totient is φ = 40939325280.

The previous prime is 78823049147. The next prime is 78823049183. The reversal of 78823049151 is 15194032887.

It is not a de Polignac number, because 78823049151 - 2² = 78823049147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78823049151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78823049351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1319590 + ... + 1378028.

It is an arithmetic number, because the mean of its divisors is an integer number (4095475200).

Almost surely, 2^78823049151 is an apocalyptic number.

78823049151 is a deficient number, since it is larger than the sum of its proper divisors (52232157249).

78823049151 is a wasteful number, since it uses less digits than its factorization.

78823049151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64299.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 78823049151 in words is "seventy-eight billion, eight hundred twenty-three million, forty-nine thousand, one hundred fifty-one".