78072627469 has 2 divisors, whose sum is σ = 78072627470. Its totient is φ = 78072627468.

The previous prime is 78072627427. The next prime is 78072627539. The reversal of 78072627469 is 96472627087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62995980100 + 15076647369 = 250990^2 + 122787^2 .

It is a cyclic number.

It is not a de Polignac number, because 78072627469 - 2²⁵ = 78039073037 is a prime.

It is a super-2 number, since 2×78072627469² (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 (78072637469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39036313734 + 39036313735.

It is an arithmetic number, because the mean of its divisors is an integer number (39036313735).

Almost surely, 2^78072627469 is an apocalyptic number.

It is an amenable number.

78072627469 is a deficient number, since it is larger than the sum of its proper divisors (1).

78072627469 is an equidigital number, since it uses as much as digits as its factorization.

78072627469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 78072627469 in words is "seventy-eight billion, seventy-two million, six hundred twenty-seven thousand, four hundred sixty-nine".