26355567487 has 2 divisors, whose sum is σ = 26355567488. Its totient is φ = 26355567486.

The previous prime is 26355567373. The next prime is 26355567509. The reversal of 26355567487 is 78476555362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26355567487 is a prime.

It is a super-2 number, since 2×26355567487² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26355567587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13177783743 + 13177783744.

It is an arithmetic number, because the mean of its divisors is an integer number (13177783744).

Almost surely, 2^26355567487 is an apocalyptic number.

26355567487 is a deficient number, since it is larger than the sum of its proper divisors (1).

26355567487 is an equidigital number, since it uses as much as digits as its factorization.

26355567487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336000, while the sum is 58.

The spelling of 26355567487 in words is "twenty-six billion, three hundred fifty-five million, five hundred sixty-seven thousand, four hundred eighty-seven".