49844581081 has 3 divisors (see below), whose sum is σ = 49844804341. Its totient is φ = 49844357822.

The previous prime is 49844581079. The next prime is 49844581091. The reversal of 49844581081 is 18018544894.

The square root of 49844581081 is 223259.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 49844581081 - 2¹ = 49844581079 is a prime.

It is a super-2 number, since 2×49844581081² (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 (49844581091) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 111630 + ... + 334888.

Almost surely, 2^49844581081 is an apocalyptic number.

49844581081 is the 223259-th square number.

49844581081 is the 111630-th centered octagonal number.

It is an amenable number.

49844581081 is a deficient number, since it is larger than the sum of its proper divisors (223260).

49844581081 is an frugal number, since it uses more digits than its factorization.

49844581081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446518 (or 223259 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 52.

The spelling of 49844581081 in words is "forty-nine billion, eight hundred forty-four million, five hundred eighty-one thousand, eighty-one".