27454526780 has 48 divisors (see below), whose sum is σ = 59831140320. Its totient is φ = 10569608448.

The previous prime is 27454526753. The next prime is 27454526789. The reversal of 27454526780 is 8762545472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27454526789) 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, 109199 + ... + 258521.

It is an arithmetic number, because the mean of its divisors is an integer number (1246482090).

Almost surely, 2^27454526780 is an apocalyptic number.

27454526780 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 27454526780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29915570160).

27454526780 is an abundant number, since it is smaller than the sum of its proper divisors (32376613540).

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

27454526780 is a wasteful number, since it uses less digits than its factorization.

27454526780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149678 (or 149676 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 27454526780 in words is "twenty-seven billion, four hundred fifty-four million, five hundred twenty-six thousand, seven hundred eighty".