26220720534 has 16 divisors (see below), whose sum is σ = 52475446272. Its totient is φ = 8734572648.

The previous prime is 26220720509. The next prime is 26220720553. The reversal of 26220720534 is 43502702262.

It is a junction number, because it is equal to n+sod(n) for n = 26220720495 and 26220720504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406854 + ... + 1425369.

It is an arithmetic number, because the mean of its divisors is an integer number (3279715392).

Almost surely, 2^26220720534 is an apocalyptic number.

26220720534 is an abundant number, since it is smaller than the sum of its proper divisors (26254725738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26220720534 is a wasteful number, since it uses less digits than its factorization.

26220720534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833771.

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 26220720534 in words is "twenty-six billion, two hundred twenty million, seven hundred twenty thousand, five hundred thirty-four".