1249054523780 has 48 divisors (see below), whose sum is σ = 2998916113536. Its totient is φ = 428077943040.

The previous prime is 1249054523779. The next prime is 1249054523831. The reversal of 1249054523780 is 873254509421.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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, 1408169 + ... + 2116848.

It is an arithmetic number, because the mean of its divisors is an integer number (62477419032).

Almost surely, 2^{1249054523780} is an apocalyptic number.

1249054523780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249054523780 is an abundant number, since it is smaller than the sum of its proper divisors (1749861589756).

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

1249054523780 is a wasteful number, since it uses less digits than its factorization.

1249054523780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527564 (or 3527562 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 1249054523780 in words is "one trillion, two hundred forty-nine billion, fifty-four million, five hundred twenty-three thousand, seven hundred eighty".