10543231986 has 16 divisors (see below), whose sum is σ = 24098816064. Its totient is φ = 3012351984.

The previous prime is 10543231943. The next prime is 10543231987. The reversal of 10543231986 is 68913234501.

It is a super-2 number, since 2×10543231986² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 251029333 = 10543231986 / (1 + 0 + 5 + 4 + 3 + 2 + 3 + 1 + 9 + 8 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10543231987) 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, 125514625 + ... + 125514708.

It is an arithmetic number, because the mean of its divisors is an integer number (1506176004).

Almost surely, 2^10543231986 is an apocalyptic number.

10543231986 is an abundant number, since it is smaller than the sum of its proper divisors (13555584078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10543231986 is a wasteful number, since it uses less digits than its factorization.

10543231986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251029345.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 10543231986 in words is "ten billion, five hundred forty-three million, two hundred thirty-one thousand, nine hundred eighty-six".