26115137400 has 192 divisors, whose sum is σ = 88450231680. Its totient is φ = 6321369600.

The previous prime is 26115137383. The next prime is 26115137467. The reversal of 26115137400 is 473151162.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4993587 + ... + 4998813.

It is an arithmetic number, because the mean of its divisors is an integer number (460678290).

Almost surely, 2^26115137400 is an apocalyptic number.

26115137400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26115137400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44225115840).

26115137400 is an abundant number, since it is smaller than the sum of its proper divisors (62335094280).

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

26115137400 is a wasteful number, since it uses less digits than its factorization.

26115137400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6014 (or 6005 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 26115137400 its reverse (473151162), we get a palindrome (26588288562).

The spelling of 26115137400 in words is "twenty-six billion, one hundred fifteen million, one hundred thirty-seven thousand, four hundred".