26220246406487 has 16 divisors (see below), whose sum is σ = 30178888396800. Its totient is φ = 22314970065600.

The previous prime is 26220246406481. The next prime is 26220246406489. The reversal of 26220246406487 is 78460464202262.

It is a cyclic number.

It is not a de Polignac number, because 26220246406487 - 2²² = 26220242212183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26220246406481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3729287 + ... + 8145432.

It is an arithmetic number, because the mean of its divisors is an integer number (1886180524800).

Almost surely, 2^{26220246406487} is an apocalyptic number.

26220246406487 is a deficient number, since it is larger than the sum of its proper divisors (3958641990313).

26220246406487 is a wasteful number, since it uses less digits than its factorization.

26220246406487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11876966.

The product of its (nonzero) digits is 12386304, while the sum is 53.

The spelling of 26220246406487 in words is "twenty-six trillion, two hundred twenty billion, two hundred forty-six million, four hundred six thousand, four hundred eighty-seven".