27707172420 has 24 divisors (see below), whose sum is σ = 77580082944. Its totient is φ = 7388579296.

The previous prime is 27707172403. The next prime is 27707172461. The reversal of 27707172420 is 2427170772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230893044 + ... + 230893163.

It is an arithmetic number, because the mean of its divisors is an integer number (3232503456).

Almost surely, 2^27707172420 is an apocalyptic number.

27707172420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27707172420 is an abundant number, since it is smaller than the sum of its proper divisors (49872910524).

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

27707172420 is a wasteful number, since it uses less digits than its factorization.

27707172420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461786219 (or 461786217 counting only the distinct ones).

The product of its (nonzero) digits is 76832, while the sum is 39.

The spelling of 27707172420 in words is "twenty-seven billion, seven hundred seven million, one hundred seventy-two thousand, four hundred twenty".