43687765380 has 192 divisors, whose sum is σ = 148633325568. Its totient is φ = 9371281920.

The previous prime is 43687765379. The next prime is 43687765399. The reversal of 43687765380 is 8356778634.

It is a self number, because there is not a number n which added to its sum of digits gives 43687765380.

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, 469315 + ... + 554645.

It is an arithmetic number, because the mean of its divisors is an integer number (774131904).

Almost surely, 2^43687765380 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 43687765380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74316662784).

43687765380 is an abundant number, since it is smaller than the sum of its proper divisors (104945560188).

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

43687765380 is a wasteful number, since it uses less digits than its factorization.

43687765380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85426 (or 85424 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 57.

The spelling of 43687765380 in words is "forty-three billion, six hundred eighty-seven million, seven hundred sixty-five thousand, three hundred eighty".