78373645151 has 2 divisors, whose sum is σ = 78373645152. Its totient is φ = 78373645150.

The previous prime is 78373645117. The next prime is 78373645171. The reversal of 78373645151 is 15154637387.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78373645151 is a prime.

It is a super-2 number, since 2×78373645151² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78373645151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78373645171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39186822575 + 39186822576.

It is an arithmetic number, because the mean of its divisors is an integer number (39186822576).

Almost surely, 2^78373645151 is an apocalyptic number.

78373645151 is a deficient number, since it is larger than the sum of its proper divisors (1).

78373645151 is an equidigital number, since it uses as much as digits as its factorization.

78373645151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 50.

The spelling of 78373645151 in words is "seventy-eight billion, three hundred seventy-three million, six hundred forty-five thousand, one hundred fifty-one".