26537890169 has 8 divisors (see below), whose sum is σ = 31374845760. Its totient is φ = 21962391696.

The previous prime is 26537890129. The next prime is 26537890189. The reversal of 26537890169 is 96109873562.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-26537890169 is a prime.

It is a super-2 number, since 2×26537890169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26537890129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65364059 + ... + 65364464.

It is an arithmetic number, because the mean of its divisors is an integer number (3921855720).

Almost surely, 2^26537890169 is an apocalyptic number.

26537890169 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26537890169 is a deficient number, since it is larger than the sum of its proper divisors (4836955591).

26537890169 is a wasteful number, since it uses less digits than its factorization.

26537890169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130728559.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 26537890169 in words is "twenty-six billion, five hundred thirty-seven million, eight hundred ninety thousand, one hundred sixty-nine".