26667780414 has 64 divisors (see below), whose sum is σ = 59831066880. Its totient is φ = 7852965120.

The previous prime is 26667780413. The next prime is 26667780431. The reversal of 26667780414 is 41408776662.

It is a super-2 number, since 2×26667780414² (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 (26667780413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2091322 + ... + 2104034.

It is an arithmetic number, because the mean of its divisors is an integer number (934860420).

Almost surely, 2^26667780414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26667780414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29915533440).

26667780414 is an abundant number, since it is smaller than the sum of its proper divisors (33163286466).

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

26667780414 is a wasteful number, since it uses less digits than its factorization.

26667780414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13625.

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 26667780414 in words is "twenty-six billion, six hundred sixty-seven million, seven hundred eighty thousand, four hundred fourteen".