43331378551 has 8 divisors (see below), whose sum is σ = 43729006464. Its totient is φ = 42933999360.

The previous prime is 43331378509. The next prime is 43331378561. The reversal of 43331378551 is 15587313334.

43331378551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43331378551 - 2²³ = 43322989943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43331378498 and 43331378507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43331378561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297331 + ... + 418411.

It is an arithmetic number, because the mean of its divisors is an integer number (5466125808).

Almost surely, 2^43331378551 is an apocalyptic number.

43331378551 is a deficient number, since it is larger than the sum of its proper divisors (397627913).

43331378551 is a wasteful number, since it uses less digits than its factorization.

43331378551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124361.

The product of its digits is 453600, while the sum is 43.

The spelling of 43331378551 in words is "forty-three billion, three hundred thirty-one million, three hundred seventy-eight thousand, five hundred fifty-one".