1219679999987 has 2 divisors, whose sum is σ = 1219679999988. Its totient is φ = 1219679999986.

The previous prime is 1219679999893. The next prime is 1219680000031. The reversal of 1219679999987 is 7899999769121.

It is a strong prime.

It is an emirp because it is prime and its reverse (7899999769121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1219679999987 - 2³² = 1215385032691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1219679999899 and 1219679999908.

It is not a weakly prime, because it can be changed into another prime (1219679999687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609839999993 + 609839999994.

It is an arithmetic number, because the mean of its divisors is an integer number (609839999994).

Almost surely, 2^{1219679999987} is an apocalyptic number.

1219679999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219679999987 is an equidigital number, since it uses as much as digits as its factorization.

1219679999987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2499898464, while the sum is 86.

The spelling of 1219679999987 in words is "one trillion, two hundred nineteen billion, six hundred seventy-nine million, nine hundred ninety-nine thousand, nine hundred eighty-seven".