285137340538 has 8 divisors (see below), whose sum is σ = 428108371488. Its totient is φ = 142434550044.

The previous prime is 285137340511. The next prime is 285137340557. The reversal of 285137340538 is 835043731582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 285137340491 and 285137340500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67057456 + ... + 67061707.

It is an arithmetic number, because the mean of its divisors is an integer number (53513546436).

Almost surely, 2^285137340538 is an apocalyptic number.

285137340538 is a deficient number, since it is larger than the sum of its proper divisors (142971030950).

285137340538 is a wasteful number, since it uses less digits than its factorization.

285137340538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134120228.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 285137340538 in words is "two hundred eighty-five billion, one hundred thirty-seven million, three hundred forty thousand, five hundred thirty-eight".