27905921630 has 16 divisors (see below), whose sum is σ = 50233083120. Its totient is φ = 11161829952.

The previous prime is 27905921629. The next prime is 27905921633. The reversal of 27905921630 is 3612950972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27905921633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201242 + ... + 310338.

It is an arithmetic number, because the mean of its divisors is an integer number (3139567695).

Almost surely, 2^27905921630 is an apocalyptic number.

27905921630 is a deficient number, since it is larger than the sum of its proper divisors (22327161490).

27905921630 is a wasteful number, since it uses less digits than its factorization.

27905921630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134683.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 27905921630 in words is "twenty-seven billion, nine hundred five million, nine hundred twenty-one thousand, six hundred thirty".