27145223740 has 48 divisors (see below), whose sum is σ = 57812827968. Its totient is φ = 10704351744.

The previous prime is 27145223719. The next prime is 27145223741. The reversal of 27145223740 is 4732254172.

It is a self number, because there is not a number n which added to its sum of digits gives 27145223740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27145223741) 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, 5637574 + ... + 5642386.

It is an arithmetic number, because the mean of its divisors is an integer number (1204433916).

Almost surely, 2^27145223740 is an apocalyptic number.

27145223740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27145223740 is an abundant number, since it is smaller than the sum of its proper divisors (30667604228).

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

27145223740 is a wasteful number, since it uses less digits than its factorization.

27145223740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8758 (or 8756 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The spelling of 27145223740 in words is "twenty-seven billion, one hundred forty-five million, two hundred twenty-three thousand, seven hundred forty".