43949806016136 has 32 divisors (see below), whose sum is σ = 110189341752000. Its totient is φ = 14607958443840.

The previous prime is 43949806016131. The next prime is 43949806016173. The reversal of 43949806016136 is 63161060894934.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 43949806016136.

It is not an unprimeable number, because it can be changed into a prime (43949806016131) 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, 2623547380 + ... + 2623564131.

It is an arithmetic number, because the mean of its divisors is an integer number (3443416929750).

Almost surely, 2^{43949806016136} is an apocalyptic number.

It is an amenable number.

43949806016136 is an abundant number, since it is smaller than the sum of its proper divisors (66239535735864).

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

43949806016136 is a wasteful number, since it uses less digits than its factorization.

43949806016136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5247111869 (or 5247111865 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 43949806016136 in words is "forty-three trillion, nine hundred forty-nine billion, eight hundred six million, sixteen thousand, one hundred thirty-six".