78256269037 has 2 divisors, whose sum is σ = 78256269038. Its totient is φ = 78256269036.

The previous prime is 78256268977. The next prime is 78256269041. The reversal of 78256269037 is 73096265287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77855508676 + 400760361 = 279026^2 + 20019^2 .

It is a cyclic number.

It is not a de Polignac number, because 78256269037 - 2¹¹ = 78256266989 is a prime.

It is a super-2 number, since 2×78256269037² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78256261037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39128134518 + 39128134519.

It is an arithmetic number, because the mean of its divisors is an integer number (39128134519).

Almost surely, 2^78256269037 is an apocalyptic number.

It is an amenable number.

78256269037 is a deficient number, since it is larger than the sum of its proper divisors (1).

78256269037 is an equidigital number, since it uses as much as digits as its factorization.

78256269037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 78256269037 in words is "seventy-eight billion, two hundred fifty-six million, two hundred sixty-nine thousand, thirty-seven".