1249771448352 has 48 divisors (see below), whose sum is σ = 3749314347072. Its totient is φ = 357077556480.

The previous prime is 1249771448291. The next prime is 1249771448399. The reversal of 1249771448352 is 2538441779421.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 1249771448292 and 1249771448301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929888799 + ... + 929890142.

It is an arithmetic number, because the mean of its divisors is an integer number (78110715564).

Almost surely, 2^{1249771448352} is an apocalyptic number.

1249771448352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1249771448352 is an abundant number, since it is smaller than the sum of its proper divisors (2499542898720).

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

1249771448352 is a wasteful number, since it uses less digits than its factorization.

1249771448352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859778961 (or 1859778953 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 57.

The spelling of 1249771448352 in words is "one trillion, two hundred forty-nine billion, seven hundred seventy-one million, four hundred forty-eight thousand, three hundred fifty-two".