427380215805 has 24 divisors (see below), whose sum is σ = 745698295680. Its totient is φ = 226426600800.

The previous prime is 427380215777. The next prime is 427380215861. The reversal of 427380215805 is 508512083724.

427380215805 is a `hidden beast` number, since 42 + 7 + 3 + 8 + 0 + 21 + 580 + 5 = 666.

It is not a de Polignac number, because 427380215805 - 2¹⁹ = 427379691517 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31441345 + ... + 31454934.

It is an arithmetic number, because the mean of its divisors is an integer number (31070762320).

Almost surely, 2^427380215805 is an apocalyptic number.

427380215805 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

427380215805 is a deficient number, since it is larger than the sum of its proper divisors (318318079875).

427380215805 is a wasteful number, since it uses less digits than its factorization.

427380215805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62896441 (or 62896438 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 427380215805 in words is "four hundred twenty-seven billion, three hundred eighty million, two hundred fifteen thousand, eight hundred five".