61536046449 has 4 divisors (see below), whose sum is σ = 82048061936. Its totient is φ = 41024030964.

The previous prime is 61536046433. The next prime is 61536046457. The reversal of 61536046449 is 94464063516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61536046449 - 2⁴ = 61536046433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61536046398 and 61536046407.

It is not an unprimeable number, because it can be changed into a prime (61536046459) 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, 10256007739 + ... + 10256007744.

It is an arithmetic number, because the mean of its divisors is an integer number (20512015484).

Almost surely, 2^61536046449 is an apocalyptic number.

It is an amenable number.

61536046449 is a deficient number, since it is larger than the sum of its proper divisors (20512015487).

61536046449 is a wasteful number, since it uses less digits than its factorization.

61536046449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20512015486.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 61536046449 in words is "sixty-one billion, five hundred thirty-six million, forty-six thousand, four hundred forty-nine".