26939811651 has 16 divisors (see below), whose sum is σ = 38038955904. Its totient is φ = 16900619904.

The previous prime is 26939811641. The next prime is 26939811659. The reversal of 26939811651 is 15611893962.

It is not a de Polignac number, because 26939811651 - 2⁹ = 26939811139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 26939811594 and 26939811603.

It is not an unprimeable number, because it can be changed into a prime (26939811659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293556 + ... + 374238.

It is an arithmetic number, because the mean of its divisors is an integer number (2377434744).

Almost surely, 2^26939811651 is an apocalyptic number.

26939811651 is a deficient number, since it is larger than the sum of its proper divisors (11099144253).

26939811651 is a wasteful number, since it uses less digits than its factorization.

26939811651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87250.

The product of its digits is 699840, while the sum is 51.

The spelling of 26939811651 in words is "twenty-six billion, nine hundred thirty-nine million, eight hundred eleven thousand, six hundred fifty-one".