1249781669948 has 48 divisors (see below), whose sum is σ = 2608578255360. Its totient is φ = 512266417344.

The previous prime is 1249781669933. The next prime is 1249781669953. The reversal of 1249781669948 is 8499661879421.

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, 5006318 + ... + 5250026.

It is an arithmetic number, because the mean of its divisors is an integer number (54345380320).

Almost surely, 2^{1249781669948} is an apocalyptic number.

It is an amenable number.

1249781669948 is an abundant number, since it is smaller than the sum of its proper divisors (1358796585412).

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

1249781669948 is a wasteful number, since it uses less digits than its factorization.

1249781669948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251706 (or 251704 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 74.

The spelling of 1249781669948 in words is "one trillion, two hundred forty-nine billion, seven hundred eighty-one million, six hundred sixty-nine thousand, nine hundred forty-eight".