428599837587 has 18 divisors (see below), whose sum is σ = 573342815844. Its totient is φ = 284798109960.

The previous prime is 428599837529. The next prime is 428599837609. The reversal of 428599837587 is 785738995824.

It is not a de Polignac number, because 428599837587 - 2¹² = 428599833491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428599837507) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 620259912 + ... + 620260602.

It is an arithmetic number, because the mean of its divisors is an integer number (31852378658).

Almost surely, 2^428599837587 is an apocalyptic number.

428599837587 is a deficient number, since it is larger than the sum of its proper divisors (144742978257).

428599837587 is an frugal number, since it uses more digits than its factorization.

428599837587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479 (or 1241 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 75.

Multiplying 428599837587 by its sum of digits (75), we get a square (32144987819025 = 5669655²).

The spelling of 428599837587 in words is "four hundred twenty-eight billion, five hundred ninety-nine million, eight hundred thirty-seven thousand, five hundred eighty-seven".