26346117644 has 48 divisors (see below), whose sum is σ = 57593120256. Its totient is φ = 10244956800.

The previous prime is 26346117643. The next prime is 26346117647. The reversal of 26346117644 is 44671164362.

It is a super-2 number, since 2×26346117644² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 26346117595 and 26346117604.

It is not an unprimeable number, because it can be changed into a prime (26346117643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78377 + ... + 242559.

It is an arithmetic number, because the mean of its divisors is an integer number (1199856672).

Almost surely, 2^26346117644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26346117644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28796560128).

26346117644 is an abundant number, since it is smaller than the sum of its proper divisors (31247002612).

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

26346117644 is a wasteful number, since it uses less digits than its factorization.

26346117644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164726 (or 164724 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The spelling of 26346117644 in words is "twenty-six billion, three hundred forty-six million, one hundred seventeen thousand, six hundred forty-four".