49722490861 has 8 divisors (see below), whose sum is σ = 50541445944. Its totient is φ = 48903659520.

The previous prime is 49722490847. The next prime is 49722490927. The reversal of 49722490861 is 16809422794.

It can be written as a sum of positive squares in 4 ways, for example, as 801456100 + 48921034761 = 28310^2 + 221181^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 49722490861 - 2⁷ = 49722490733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49722490799 and 49722490808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49722490841) 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, 1142085 + ... + 1184821.

It is an arithmetic number, because the mean of its divisors is an integer number (6317680743).

Almost surely, 2^49722490861 is an apocalyptic number.

It is an amenable number.

49722490861 is a deficient number, since it is larger than the sum of its proper divisors (818955083).

49722490861 is a wasteful number, since it uses less digits than its factorization.

49722490861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61871.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 49722490861 in words is "forty-nine billion, seven hundred twenty-two million, four hundred ninety thousand, eight hundred sixty-one".