43255763964 has 192 divisors, whose sum is σ = 136622080000. Its totient is φ = 11559817152.

The previous prime is 43255763959. The next prime is 43255763987. The reversal of 43255763964 is 46936755234.

43255763964 is a `hidden beast` number, since 4 + 3 + 2 + 5 + 576 + 3 + 9 + 64 = 666.

It is a super-2 number, since 2×43255763964² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 43255763964.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1115697 + ... + 1153815.

Almost surely, 2^43255763964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43255763964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68311040000).

43255763964 is an abundant number, since it is smaller than the sum of its proper divisors (93366316036).

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

43255763964 is a wasteful number, since it uses less digits than its factorization.

43255763964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38237 (or 38229 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 54.

The spelling of 43255763964 in words is "forty-three billion, two hundred fifty-five million, seven hundred sixty-three thousand, nine hundred sixty-four".