27517197420 has 48 divisors (see below), whose sum is σ = 85609060320. Its totient is φ = 7337919168.

The previous prime is 27517197419. The next prime is 27517197439. The reversal of 27517197420 is 2479171572.

27517197420 is a `hidden beast` number, since 2 + 7 + 517 + 1 + 97 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25478347 + ... + 25479426.

It is an arithmetic number, because the mean of its divisors is an integer number (1783522090).

Almost surely, 2^27517197420 is an apocalyptic number.

27517197420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27517197420 is an abundant number, since it is smaller than the sum of its proper divisors (58091862900).

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

27517197420 is a wasteful number, since it uses less digits than its factorization.

27517197420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50957791 (or 50957783 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The spelling of 27517197420 in words is "twenty-seven billion, five hundred seventeen million, one hundred ninety-seven thousand, four hundred twenty".