78011525750447 has 2 divisors, whose sum is σ = 78011525750448. Its totient is φ = 78011525750446.

The previous prime is 78011525750393. The next prime is 78011525750471. The reversal of 78011525750447 is 74405752511087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78011525750447 - 2²⁶ = 78011458641583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78011525750392 and 78011525750401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78011524750447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39005762875223 + 39005762875224.

It is an arithmetic number, because the mean of its divisors is an integer number (39005762875224).

Almost surely, 2^{78011525750447} is an apocalyptic number.

78011525750447 is a deficient number, since it is larger than the sum of its proper divisors (1).

78011525750447 is an equidigital number, since it uses as much as digits as its factorization.

78011525750447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10976000, while the sum is 56.

The spelling of 78011525750447 in words is "seventy-eight trillion, eleven billion, five hundred twenty-five million, seven hundred fifty thousand, four hundred forty-seven".