427976987529 has 128 divisors (see below), whose sum is σ = 726063528960. Its totient is φ = 218275430400.

The previous prime is 427976987519. The next prime is 427976987563. The reversal of 427976987529 is 925789679724.

It is a de Polignac number, because none of the positive numbers 2^k-427976987529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427976987519) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 248678389 + ... + 248680109.

It is an arithmetic number, because the mean of its divisors is an integer number (5672371320).

Almost surely, 2^427976987529 is an apocalyptic number.

It is an amenable number.

427976987529 is a deficient number, since it is larger than the sum of its proper divisors (298086541431).

427976987529 is a wasteful number, since it uses less digits than its factorization.

427976987529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051.

The product of its digits is 960180480, while the sum is 75.

The spelling of 427976987529 in words is "four hundred twenty-seven billion, nine hundred seventy-six million, nine hundred eighty-seven thousand, five hundred twenty-nine".