40043144551 has 8 divisors (see below), whose sum is σ = 40201535808. Its totient is φ = 39884832000.

The previous prime is 40043144549. The next prime is 40043144563. The reversal of 40043144551 is 15544134004.

40043144551 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 40043144551 - 2¹ = 40043144549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043144851) 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, 1131891 + ... + 1166731.

It is an arithmetic number, because the mean of its divisors is an integer number (5025191976).

Almost surely, 2^40043144551 is an apocalyptic number.

40043144551 is a deficient number, since it is larger than the sum of its proper divisors (158391257).

40043144551 is a wasteful number, since it uses less digits than its factorization.

40043144551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39353.

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

Adding to 40043144551 its reverse (15544134004), we get a palindrome (55587278555).

The spelling of 40043144551 in words is "forty billion, forty-three million, one hundred forty-four thousand, five hundred fifty-one".