26570256768 has 128 divisors (see below), whose sum is σ = 85548297600. Its totient is φ = 8051581440.

The previous prime is 26570256737. The next prime is 26570256787. The reversal of 26570256768 is 86765207562.

26570256768 is a `hidden beast` number, since 2 + 6 + 5 + 70 + 2 + 567 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311446 + ... + 387477.

It is an arithmetic number, because the mean of its divisors is an integer number (668346075).

Almost surely, 2^26570256768 is an apocalyptic number.

It is an amenable number.

26570256768 is an abundant number, since it is smaller than the sum of its proper divisors (58978040832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26570256768 is a wasteful number, since it uses less digits than its factorization.

26570256768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698957 (or 698939 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 26570256768 in words is "twenty-six billion, five hundred seventy million, two hundred fifty-six thousand, seven hundred sixty-eight".