61236338949 has 48 divisors (see below), whose sum is σ = 91235589120. Its totient is φ = 39561799680.

The previous prime is 61236338887. The next prime is 61236338953. The reversal of 61236338949 is 94983363216.

It is not a de Polignac number, because 61236338949 - 2⁸ = 61236338693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61236338895 and 61236338904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61236338959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25023844 + ... + 25026290.

It is an arithmetic number, because the mean of its divisors is an integer number (1900741440).

Almost surely, 2^61236338949 is an apocalyptic number.

It is an amenable number.

61236338949 is a deficient number, since it is larger than the sum of its proper divisors (29999250171).

61236338949 is a wasteful number, since it uses less digits than its factorization.

61236338949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170 (or 3167 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The spelling of 61236338949 in words is "sixty-one billion, two hundred thirty-six million, three hundred thirty-eight thousand, nine hundred forty-nine".