78789226951 has 2 divisors, whose sum is σ = 78789226952. Its totient is φ = 78789226950.

The previous prime is 78789226927. The next prime is 78789226963. The reversal of 78789226951 is 15962298787.

It is a strong prime.

It is an emirp because it is prime and its reverse (15962298787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78789226951 - 2²⁵ = 78755672519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78789226921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39394613475 + 39394613476.

It is an arithmetic number, because the mean of its divisors is an integer number (39394613476).

Almost surely, 2^78789226951 is an apocalyptic number.

78789226951 is a deficient number, since it is larger than the sum of its proper divisors (1).

78789226951 is an equidigital number, since it uses as much as digits as its factorization.

78789226951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 64.

The spelling of 78789226951 in words is "seventy-eight billion, seven hundred eighty-nine million, two hundred twenty-six thousand, nine hundred fifty-one".