49159258681 has 8 divisors (see below), whose sum is σ = 54371571464. Its totient is φ = 44151350400.

The previous prime is 49159258667. The next prime is 49159258703. The reversal of 49159258681 is 18685295194.

49159258681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3839661225 + 45319597456 = 61965^2 + 212884^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49159258681 is a prime.

It is a super-2 number, since 2×49159258681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49159258601) 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, 51100620 + ... + 51101581.

It is an arithmetic number, because the mean of its divisors is an integer number (6796446433).

Almost surely, 2^49159258681 is an apocalyptic number.

It is an amenable number.

49159258681 is a deficient number, since it is larger than the sum of its proper divisors (5212312783).

49159258681 is a wasteful number, since it uses less digits than its factorization.

49159258681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102202251.

The product of its digits is 6220800, while the sum is 58.

The spelling of 49159258681 in words is "forty-nine billion, one hundred fifty-nine million, two hundred fifty-eight thousand, six hundred eighty-one".