1285791215494 has 32 divisors (see below), whose sum is σ = 2063467283616. Its totient is φ = 598765171200.

The previous prime is 1285791215483. The next prime is 1285791215519. The reversal of 1285791215494 is 4945121975821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6345877 + ... + 6545359.

It is an arithmetic number, because the mean of its divisors is an integer number (64483352613).

Almost surely, 2^{1285791215494} is an apocalyptic number.

1285791215494 is a deficient number, since it is larger than the sum of its proper divisors (777676068122).

1285791215494 is a wasteful number, since it uses less digits than its factorization.

1285791215494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201480.

The product of its digits is 7257600, while the sum is 58.

The spelling of 1285791215494 in words is "one trillion, two hundred eighty-five billion, seven hundred ninety-one million, two hundred fifteen thousand, four hundred ninety-four".