78346011408127 has 2 divisors, whose sum is σ = 78346011408128. Its totient is φ = 78346011408126.

The previous prime is 78346011408023. The next prime is 78346011408221. The reversal of 78346011408127 is 72180411064387.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78346011408127 - 2¹¹ = 78346011406079 is a prime.

It is a super-2 number, since 2×78346011408127² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78346011408527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39173005704063 + 39173005704064.

It is an arithmetic number, because the mean of its divisors is an integer number (39173005704064).

Almost surely, 2^{78346011408127} is an apocalyptic number.

78346011408127 is a deficient number, since it is larger than the sum of its proper divisors (1).

78346011408127 is an equidigital number, since it uses as much as digits as its factorization.

78346011408127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 78346011408127 in words is "seventy-eight trillion, three hundred forty-six billion, eleven million, four hundred eight thousand, one hundred twenty-seven".