1279512499048 has 128 divisors (see below), whose sum is σ = 2820838406400. Its totient is φ = 532678809600.

The previous prime is 1279512499043. The next prime is 1279512499087. The reversal of 1279512499048 is 8409942159721.

It is not an unprimeable number, because it can be changed into a prime (1279512499043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685329811 + ... + 685331677.

It is an arithmetic number, because the mean of its divisors is an integer number (22037800050).

Almost surely, 2^{1279512499048} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1279512499048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410419203200).

1279512499048 is an abundant number, since it is smaller than the sum of its proper divisors (1541325907352).

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

1279512499048 is a wasteful number, since it uses less digits than its factorization.

1279512499048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 1279512499048 in words is "one trillion, two hundred seventy-nine billion, five hundred twelve million, four hundred ninety-nine thousand, forty-eight".