26294542137864 has 1536 divisors, whose sum is σ = 101633688576000. Its totient is φ = 6190616678400.

The previous prime is 26294542137863. The next prime is 26294542137881. The reversal of 26294542137864 is 46873124549262.

26294542137864 is a `hidden beast` number, since 2 + 6 + 2 + 9 + 4 + 542 + 1 + 3 + 7 + 86 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (26294542137863) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 36570990097 + ... + 36570990815.

It is an arithmetic number, because the mean of its divisors is an integer number (66167766000).

Almost surely, 2^{26294542137864} is an apocalyptic number.

26294542137864 is a gapful number since it is divisible by the number (24) 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 26294542137864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50816844288000).

26294542137864 is an abundant number, since it is smaller than the sum of its proper divisors (75339146438136).

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

26294542137864 is a wasteful number, since it uses less digits than its factorization.

26294542137864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1159 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 63.

The spelling of 26294542137864 in words is "twenty-six trillion, two hundred ninety-four billion, five hundred forty-two million, one hundred thirty-seven thousand, eight hundred sixty-four".