26993439019 has 2 divisors, whose sum is σ = 26993439020. Its totient is φ = 26993439018.

The previous prime is 26993438993. The next prime is 26993439029. The reversal of 26993439019 is 91093439962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26993439019 - 2⁵ = 26993438987 is a prime.

It is a super-2 number, since 2×26993439019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26993439029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13496719509 + 13496719510.

It is an arithmetic number, because the mean of its divisors is an integer number (13496719510).

Almost surely, 2^26993439019 is an apocalyptic number.

26993439019 is a deficient number, since it is larger than the sum of its proper divisors (1).

26993439019 is an equidigital number, since it uses as much as digits as its factorization.

26993439019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2834352, while the sum is 55.

The spelling of 26993439019 in words is "twenty-six billion, nine hundred ninety-three million, four hundred thirty-nine thousand, nineteen".