43631721325 has 48 divisors (see below), whose sum is σ = 56908982592. Its totient is φ = 33151040000.

The previous prime is 43631721293. The next prime is 43631721337. The reversal of 43631721325 is 52312713634.

It is not a de Polignac number, because 43631721325 - 2⁵ = 43631721293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7113510 + ... + 7119640.

It is an arithmetic number, because the mean of its divisors is an integer number (1185603804).

Almost surely, 2^43631721325 is an apocalyptic number.

It is an amenable number.

43631721325 is a deficient number, since it is larger than the sum of its proper divisors (13277261267).

43631721325 is a wasteful number, since it uses less digits than its factorization.

43631721325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366 (or 6361 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The spelling of 43631721325 in words is "forty-three billion, six hundred thirty-one million, seven hundred twenty-one thousand, three hundred twenty-five".