40631536543 has 32 divisors (see below), whose sum is σ = 46640139840. Its totient is φ = 35129687040.

The previous prime is 40631536523. The next prime is 40631536553. The reversal of 40631536543 is 34563513604.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40631536543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40631536496 and 40631536505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40631536523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1666680 + ... + 1690882.

It is an arithmetic number, because the mean of its divisors is an integer number (1457504370).

Almost surely, 2^40631536543 is an apocalyptic number.

40631536543 is a deficient number, since it is larger than the sum of its proper divisors (6008603297).

40631536543 is a wasteful number, since it uses less digits than its factorization.

40631536543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24379.

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 40631536543 in words is "forty billion, six hundred thirty-one million, five hundred thirty-six thousand, five hundred forty-three".