27440661000 has 128 divisors (see below), whose sum is σ = 85950408960. Its totient is φ = 7288832000.

The previous prime is 27440660999. The next prime is 27440661029. The reversal of 27440661000 is 16604472.

It is a super-2 number, since 2×27440661000² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753205 + ... + 788795.

It is an arithmetic number, because the mean of its divisors is an integer number (671487570).

Almost surely, 2^27440661000 is an apocalyptic number.

27440661000 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 27440661000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42975204480).

27440661000 is an abundant number, since it is smaller than the sum of its proper divisors (58509747960).

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

27440661000 is a wasteful number, since it uses less digits than its factorization.

27440661000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35872 (or 35858 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 27440661000 in words is "twenty-seven billion, four hundred forty million, six hundred sixty-one thousand".