1251144252092 has 72 divisors (see below), whose sum is σ = 2577916656000. Its totient is φ = 520460842176.

The previous prime is 1251144252091. The next prime is 1251144252097. The reversal of 1251144252092 is 2902524411521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251144252091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16022159 + ... + 16100057.

It is an arithmetic number, because the mean of its divisors is an integer number (35804398000).

Almost surely, 2^{1251144252092} 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 1251144252092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288958328000).

1251144252092 is an abundant number, since it is smaller than the sum of its proper divisors (1326772403908).

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

1251144252092 is a wasteful number, since it uses less digits than its factorization.

1251144252092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78403 (or 78364 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 1251144252092 in words is "one trillion, two hundred fifty-one billion, one hundred forty-four million, two hundred fifty-two thousand, ninety-two".