1252769397198 has 128 divisors (see below), whose sum is σ = 2791727009280. Its totient is φ = 371615040000.

The previous prime is 1252769397197. The next prime is 1252769397221. The reversal of 1252769397198 is 8917939672521.

It is a super-5 number, since 5×1252769397198⁵ (a number of 62 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252769397197) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 393085761 + ... + 393088947.

It is an arithmetic number, because the mean of its divisors is an integer number (21810367260).

Almost surely, 2^{1252769397198} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252769397198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395863504640).

1252769397198 is an abundant number, since it is smaller than the sum of its proper divisors (1538957612082).

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

1252769397198 is a wasteful number, since it uses less digits than its factorization.

1252769397198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954.

The product of its digits is 102876480, while the sum is 69.

The spelling of 1252769397198 in words is "one trillion, two hundred fifty-two billion, seven hundred sixty-nine million, three hundred ninety-seven thousand, one hundred ninety-eight".