1285537532283 has 48 divisors (see below), whose sum is σ = 1941249463296. Its totient is φ = 818966453760.

The previous prime is 1285537532239. The next prime is 1285537532333. The reversal of 1285537532283 is 3822357355821.

1285537532283 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 537 + 5 + 3 + 22 + 83 = 666.

It is not a de Polignac number, because 1285537532283 - 2²⁸ = 1285269096827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285537532233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52499403 + ... + 52523883.

It is an arithmetic number, because the mean of its divisors is an integer number (40442697152).

Almost surely, 2^{1285537532283} is an apocalyptic number.

1285537532283 is a deficient number, since it is larger than the sum of its proper divisors (655711931013).

1285537532283 is a wasteful number, since it uses less digits than its factorization.

1285537532283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27464 (or 27461 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 1285537532283 in words is "one trillion, two hundred eighty-five billion, five hundred thirty-seven million, five hundred thirty-two thousand, two hundred eighty-three".