26920197901945 has 16 divisors (see below), whose sum is σ = 34006736695680. Its totient is φ = 20401310592000.

The previous prime is 26920197901829. The next prime is 26920197902023. The reversal of 26920197901945 is 54910979102962.

It is not a de Polignac number, because 26920197901945 - 2²⁵ = 26920164347513 is a prime.

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, 8056296 + ... + 10896985.

It is an arithmetic number, because the mean of its divisors is an integer number (2125421043480).

Almost surely, 2^{26920197901945} is an apocalyptic number.

It is an amenable number.

26920197901945 is a deficient number, since it is larger than the sum of its proper divisors (7086538793735).

26920197901945 is a wasteful number, since it uses less digits than its factorization.

26920197901945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18968256.

The product of its (nonzero) digits is 22044960, while the sum is 64.

The spelling of 26920197901945 in words is "twenty-six trillion, nine hundred twenty billion, one hundred ninety-seven million, nine hundred one thousand, nine hundred forty-five".