43125215440 has 40 divisors (see below), whose sum is σ = 100425143808. Its totient is φ = 17222728320.

The previous prime is 43125215429. The next prime is 43125215467. The reversal of 43125215440 is 4451252134.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376672 + ... + 477631.

Almost surely, 2^43125215440 is an apocalyptic number.

43125215440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43125215440 is an abundant number, since it is smaller than the sum of its proper divisors (57299928368).

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

43125215440 is a wasteful number, since it uses less digits than its factorization.

43125215440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854947 (or 854941 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 43125215440 its reverse (4451252134), we get a palindrome (47576467574).

The spelling of 43125215440 in words is "forty-three billion, one hundred twenty-five million, two hundred fifteen thousand, four hundred forty".