26619943680001 has 16 divisors (see below), whose sum is σ = 30821363844480. Its totient is φ = 22519795322880.

The previous prime is 26619943679999. The next prime is 26619943680053. The reversal of 26619943680001 is 10008634991662.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 26619943680001 - 2¹ = 26619943679999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26619943680101) 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, 67680415 + ... + 68072596.

It is an arithmetic number, because the mean of its divisors is an integer number (1926335240280).

Almost surely, 2^{26619943680001} is an apocalyptic number.

It is an amenable number.

26619943680001 is a deficient number, since it is larger than the sum of its proper divisors (4201420164479).

26619943680001 is a wasteful number, since it uses less digits than its factorization.

26619943680001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135753384.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 26619943680001 in words is "twenty-six trillion, six hundred nineteen billion, nine hundred forty-three million, six hundred eighty thousand, one".