26720575487 has 2 divisors, whose sum is σ = 26720575488. Its totient is φ = 26720575486.

The previous prime is 26720575459. The next prime is 26720575499. The reversal of 26720575487 is 78457502762.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26720575487 - 2¹⁸ = 26720313343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26720575417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13360287743 + 13360287744.

It is an arithmetic number, because the mean of its divisors is an integer number (13360287744).

Almost surely, 2^26720575487 is an apocalyptic number.

26720575487 is a deficient number, since it is larger than the sum of its proper divisors (1).

26720575487 is an equidigital number, since it uses as much as digits as its factorization.

26720575487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6585600, while the sum is 53.

The spelling of 26720575487 in words is "twenty-six billion, seven hundred twenty million, five hundred seventy-five thousand, four hundred eighty-seven".