43142503991 has 8 divisors (see below), whose sum is σ = 43356730560. Its totient is φ = 42928558848.

The previous prime is 43142503973. The next prime is 43142504011. The reversal of 43142503991 is 19930524134.

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 43142503991 - 2¹⁸ = 43142241847 is a prime.

It is a super-2 number, since 2×43142503991² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43142503931) 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, 240395 + ... + 379571.

It is an arithmetic number, because the mean of its divisors is an integer number (5419591320).

Almost surely, 2^43142503991 is an apocalyptic number.

43142503991 is a deficient number, since it is larger than the sum of its proper divisors (214226569).

43142503991 is a wasteful number, since it uses less digits than its factorization.

43142503991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140713.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 43142503991 in words is "forty-three billion, one hundred forty-two million, five hundred three thousand, nine hundred ninety-one".