27492477820 has 12 divisors (see below), whose sum is σ = 57734203464. Its totient is φ = 10996991120.

The previous prime is 27492477797. The next prime is 27492477889. The reversal of 27492477820 is 2877429472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687311926 + ... + 687311965.

It is an arithmetic number, because the mean of its divisors is an integer number (4811183622).

Almost surely, 2^27492477820 is an apocalyptic number.

27492477820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27492477820 is an abundant number, since it is smaller than the sum of its proper divisors (30241725644).

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

27492477820 is a wasteful number, since it uses less digits than its factorization.

27492477820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374623900 (or 1374623898 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 27492477820 in words is "twenty-seven billion, four hundred ninety-two million, four hundred seventy-seven thousand, eight hundred twenty".