61722833949 has 32 divisors (see below), whose sum is σ = 106934615040. Its totient is φ = 34449949296.

The previous prime is 61722833947. The next prime is 61722833981. The reversal of 61722833949 is 94933822716.

61722833949 is a `hidden beast` number, since 6 + 172 + 2 + 83 + 394 + 9 = 666.

It is not a de Polignac number, because 61722833949 - 2¹ = 61722833947 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61722833895 and 61722833904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61722833947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3789267 + ... + 3805520.

It is an arithmetic number, because the mean of its divisors is an integer number (3341706720).

Almost surely, 2^61722833949 is an apocalyptic number.

It is an amenable number.

61722833949 is a deficient number, since it is larger than the sum of its proper divisors (45211781091).

61722833949 is a wasteful number, since it uses less digits than its factorization.

61722833949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594846 (or 7594840 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 61722833949 in words is "sixty-one billion, seven hundred twenty-two million, eight hundred thirty-three thousand, nine hundred forty-nine".