49661439012 has 96 divisors (see below), whose sum is σ = 135682803200. Its totient is φ = 15664682016.

The previous prime is 49661438987. The next prime is 49661439013. The reversal of 49661439012 is 21093416694.

49661439012 is a `hidden beast` number, since 496 + 6 + 143 + 9 + 0 + 12 = 666.

It is a super-2 number, since 2×49661439012² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49661439013) 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, 1847823 + ... + 1874505.

Almost surely, 2^49661439012 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 49661439012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67841401600).

49661439012 is an abundant number, since it is smaller than the sum of its proper divisors (86021364188).

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

49661439012 is a wasteful number, since it uses less digits than its factorization.

49661439012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27622 (or 27614 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 49661439012 in words is "forty-nine billion, six hundred sixty-one million, four hundred thirty-nine thousand, twelve".