26178161464 has 64 divisors (see below), whose sum is σ = 60652247040. Its totient is φ = 10314864000.

The previous prime is 26178161461. The next prime is 26178161489. The reversal of 26178161464 is 46416187162.

It is a super-2 number, since 2×26178161464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26178161461) 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, 111097 + ... + 254359.

It is an arithmetic number, because the mean of its divisors is an integer number (947691360).

Almost surely, 2^26178161464 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 26178161464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30326123520).

26178161464 is an abundant number, since it is smaller than the sum of its proper divisors (34474085576).

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

26178161464 is a wasteful number, since it uses less digits than its factorization.

26178161464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143540 (or 143536 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The spelling of 26178161464 in words is "twenty-six billion, one hundred seventy-eight million, one hundred sixty-one thousand, four hundred sixty-four".