26882978657 has 8 divisors (see below), whose sum is σ = 28054720320. Its totient is φ = 25711480080.

The previous prime is 26882978653. The next prime is 26882978669. The reversal of 26882978657 is 75687928862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26882978657 - 2² = 26882978653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26882978653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186719 + ... + 297707.

It is an arithmetic number, because the mean of its divisors is an integer number (3506840040).

Almost surely, 2^26882978657 is an apocalyptic number.

It is an amenable number.

26882978657 is a deficient number, since it is larger than the sum of its proper divisors (1171741663).

26882978657 is a wasteful number, since it uses less digits than its factorization.

26882978657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121543.

The product of its digits is 162570240, while the sum is 68.

The spelling of 26882978657 in words is "twenty-six billion, eight hundred eighty-two million, nine hundred seventy-eight thousand, six hundred fifty-seven".