26001251640001 has 64 divisors (see below), whose sum is σ = 29513587783680. Its totient is φ = 22705546752000.

The previous prime is 26001251639981. The next prime is 26001251640019. The reversal of 26001251640001 is 10004615210062.

It is a cyclic number.

It is not a de Polignac number, because 26001251640001 - 2¹⁷ = 26001251508929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26001251640041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2801552481 + ... + 2801561761.

It is an arithmetic number, because the mean of its divisors is an integer number (461149809120).

Almost surely, 2^{26001251640001} is an apocalyptic number.

It is an amenable number.

26001251640001 is a deficient number, since it is larger than the sum of its proper divisors (3512336143679).

26001251640001 is a wasteful number, since it uses less digits than its factorization.

26001251640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9958.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 26001251640001 its reverse (10004615210062), we get a palindrome (36005866850063).

The spelling of 26001251640001 in words is "twenty-six trillion, one billion, two hundred fifty-one million, six hundred forty thousand, one".