1418678677991 has 2 divisors, whose sum is σ = 1418678677992. Its totient is φ = 1418678677990.

The previous prime is 1418678677967. The next prime is 1418678678029. The reversal of 1418678677991 is 1997768768141.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1418678677991 - 2¹⁴ = 1418678661607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1418678677921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 709339338995 + 709339338996.

It is an arithmetic number, because the mean of its divisors is an integer number (709339338996).

Almost surely, 2^{1418678677991} is an apocalyptic number.

1418678677991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1418678677991 is an equidigital number, since it uses as much as digits as its factorization.

1418678677991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256048128, while the sum is 74.

The spelling of 1418678677991 in words is "one trillion, four hundred eighteen billion, six hundred seventy-eight million, six hundred seventy-seven thousand, nine hundred ninety-one".