1249328618020 has 48 divisors (see below), whose sum is σ = 3008029909248. Its totient is φ = 426963922560.

The previous prime is 1249328618011. The next prime is 1249328618033. The reversal of 1249328618020 is 208168239421.

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, 14303367 + ... + 14390446.

It is an arithmetic number, because the mean of its divisors is an integer number (62667289776).

Almost surely, 2^{1249328618020} is an apocalyptic number.

1249328618020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249328618020 is an abundant number, since it is smaller than the sum of its proper divisors (1758701291228).

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

1249328618020 is a wasteful number, since it uses less digits than its factorization.

1249328618020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28694140 (or 28694138 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 1249328618020 in words is "one trillion, two hundred forty-nine billion, three hundred twenty-eight million, six hundred eighteen thousand, twenty".