1298722477716 has 120 divisors (see below), whose sum is σ = 3403758807680. Its totient is φ = 431807018688.

The previous prime is 1298722477691. The next prime is 1298722477781. The reversal of 1298722477716 is 6177742278921.

1298722477716 is a `hidden beast` number, since 1 + 2 + 98 + 7 + 2 + 2 + 477 + 71 + 6 = 666.

It is a super-2 number, since 2×1298722477716² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 287389305 + ... + 287393823.

Almost surely, 2^{1298722477716} 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 1298722477716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701879403840).

1298722477716 is an abundant number, since it is smaller than the sum of its proper divisors (2105036329964).

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

1298722477716 is a wasteful number, since it uses less digits than its factorization.

1298722477716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595 (or 6584 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 63.

The spelling of 1298722477716 in words is "one trillion, two hundred ninety-eight billion, seven hundred twenty-two million, four hundred seventy-seven thousand, seven hundred sixteen".