2151241545400 has 96 divisors (see below), whose sum is σ = 5057906742000. Its totient is φ = 850851993600.

The previous prime is 2151241545379. The next prime is 2151241545437. The reversal of 2151241545400 is 45451421512.

It is a super-2 number, since 2×2151241545400² (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 (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9401551 + ... + 9627649.

Almost surely, 2^{2151241545400} is an apocalyptic number.

2151241545400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151241545400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528953371000).

2151241545400 is an abundant number, since it is smaller than the sum of its proper divisors (2906665196600).

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

2151241545400 is a wasteful number, since it uses less digits than its factorization.

2151241545400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226649 (or 226640 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 2151241545400 its reverse (45451421512), we get a palindrome (2196692966912).

The spelling of 2151241545400 in words is "two trillion, one hundred fifty-one billion, two hundred forty-one million, five hundred forty-five thousand, four hundred".