43040251100 has 144 divisors (see below), whose sum is σ = 117598473216. Its totient is φ = 13282080000.

The previous prime is 43040251099. The next prime is 43040251123. The reversal of 43040251100 is 115204034.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 750029 + ... + 805371.

It is an arithmetic number, because the mean of its divisors is an integer number (816656064).

Almost surely, 2^43040251100 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 43040251100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58799236608).

43040251100 is an abundant number, since it is smaller than the sum of its proper divisors (74558222116).

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

43040251100 is a wasteful number, since it uses less digits than its factorization.

43040251100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55476 (or 55469 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 43040251100 its reverse (115204034), we get a palindrome (43155455134).

The spelling of 43040251100 in words is "forty-three billion, forty million, two hundred fifty-one thousand, one hundred".