1285661238484 has 48 divisors (see below), whose sum is σ = 2615266886400. Its totient is φ = 541657267200.

The previous prime is 1285661238479. The next prime is 1285661238497. The reversal of 1285661238484 is 4848321665821.

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, 1183792 + ... + 1993159.

It is an arithmetic number, because the mean of its divisors is an integer number (54484726800).

Almost surely, 2^{1285661238484} is an apocalyptic number.

1285661238484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1285661238484 is an abundant number, since it is smaller than the sum of its proper divisors (1329605647916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285661238484 is a wasteful number, since it uses less digits than its factorization.

1285661238484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177208 (or 3177206 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 58.

The spelling of 1285661238484 in words is "one trillion, two hundred eighty-five billion, six hundred sixty-one million, two hundred thirty-eight thousand, four hundred eighty-four".