79090256143 has 4 divisors (see below), whose sum is σ = 79873328088. Its totient is φ = 78307184200.

The previous prime is 79090256131. The next prime is 79090256149. The reversal of 79090256143 is 34165209097.

It is a happy number.

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 79090256143 - 2²¹ = 79088158991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79090256093 and 79090256102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79090256149) 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, 391535821 + ... + 391536022.

It is an arithmetic number, because the mean of its divisors is an integer number (19968332022).

Almost surely, 2^79090256143 is an apocalyptic number.

79090256143 is a deficient number, since it is larger than the sum of its proper divisors (783071945).

79090256143 is a wasteful number, since it uses less digits than its factorization.

79090256143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783071944.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 79090256143 in words is "seventy-nine billion, ninety million, two hundred fifty-six thousand, one hundred forty-three".