26641401278875 has 32 divisors (see below), whose sum is σ = 33459266880000. Its totient is φ = 21178047391200.

The previous prime is 26641401278861. The next prime is 26641401278887. The reversal of 26641401278875 is 57887210414662.

It is a happy number.

It is not a de Polignac number, because 26641401278875 - 2⁹ = 26641401278363 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101723844 + ... + 101985406.

It is an arithmetic number, because the mean of its divisors is an integer number (1045602090000).

Almost surely, 2^{26641401278875} is an apocalyptic number.

26641401278875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26641401278875 is a deficient number, since it is larger than the sum of its proper divisors (6817865601125).

26641401278875 is a wasteful number, since it uses less digits than its factorization.

26641401278875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266740 (or 266730 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 26641401278875 in words is "twenty-six trillion, six hundred forty-one billion, four hundred one million, two hundred seventy-eight thousand, eight hundred seventy-five".