49012039681 has 8 divisors (see below), whose sum is σ = 55792361664. Its totient is φ = 42619164720.

The previous prime is 49012039673. The next prime is 49012039693. The reversal of 49012039681 is 18693021094.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49012039681 - 2³ = 49012039673 is a prime.

It is a super-4 number, since 4×49012039681⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49012039081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96861486 + ... + 96861991.

It is an arithmetic number, because the mean of its divisors is an integer number (6974045208).

Almost surely, 2^49012039681 is an apocalyptic number.

It is an amenable number.

49012039681 is a deficient number, since it is larger than the sum of its proper divisors (6780321983).

49012039681 is a wasteful number, since it uses less digits than its factorization.

49012039681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193723511.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 49012039681 in words is "forty-nine billion, twelve million, thirty-nine thousand, six hundred eighty-one".