61250423449 has 4 divisors (see below), whose sum is σ = 61262987364. Its totient is φ = 61237859536.

The previous prime is 61250423431. The next prime is 61250423467. The reversal of 61250423449 is 94432405216.

It is a happy number.

61250423449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61250423431) and next prime (61250423467).

It can be written as a sum of positive squares in 2 ways, for example, as 33528173449 + 27722250000 = 183107^2 + 166500^2 .

It is a cyclic number.

It is not a de Polignac number, because 61250423449 - 2⁵ = 61250423417 is a prime.

It is a super-2 number, since 2×61250423449² (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 (61250423419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6274642 + ... + 6284395.

It is an arithmetic number, because the mean of its divisors is an integer number (15315746841).

Almost surely, 2^61250423449 is an apocalyptic number.

It is an amenable number.

61250423449 is a deficient number, since it is larger than the sum of its proper divisors (12563915).

61250423449 is a wasteful number, since it uses less digits than its factorization.

61250423449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563914.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 61250423449 in words is "sixty-one billion, two hundred fifty million, four hundred twenty-three thousand, four hundred forty-nine".