427157907887 has 4 divisors (see below), whose sum is σ = 427337614896. Its totient is φ = 426978200880.

The previous prime is 427157907863. The next prime is 427157907923. The reversal of 427157907887 is 788709751724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427157907887 - 2²⁸ = 426889472431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427157907287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89849939 + ... + 89854692.

It is an arithmetic number, because the mean of its divisors is an integer number (106834403724).

Almost surely, 2^427157907887 is an apocalyptic number.

427157907887 is a deficient number, since it is larger than the sum of its proper divisors (179707009).

427157907887 is a wasteful number, since it uses less digits than its factorization.

427157907887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179707008.

The product of its (nonzero) digits is 55319040, while the sum is 65.

The spelling of 427157907887 in words is "four hundred twenty-seven billion, one hundred fifty-seven million, nine hundred seven thousand, eight hundred eighty-seven".