61249829243 has 16 divisors (see below), whose sum is σ = 61876039680. Its totient is φ = 60627574656.

The previous prime is 61249829239. The next prime is 61249829269. The reversal of 61249829243 is 34292894216.

It is a cyclic number.

It is not a de Polignac number, because 61249829243 - 2² = 61249829239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61249829191 and 61249829200.

It is not an unprimeable number, because it can be changed into a prime (61249829203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56347046 + ... + 56348132.

It is an arithmetic number, because the mean of its divisors is an integer number (3867252480).

Almost surely, 2^61249829243 is an apocalyptic number.

61249829243 is a deficient number, since it is larger than the sum of its proper divisors (626210437).

61249829243 is a wasteful number, since it uses less digits than its factorization.

61249829243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426.

The product of its digits is 1492992, while the sum is 50.

The spelling of 61249829243 in words is "sixty-one billion, two hundred forty-nine million, eight hundred twenty-nine thousand, two hundred forty-three".