61448483257 has 4 divisors (see below), whose sum is σ = 70226838016. Its totient is φ = 52670128500.

The previous prime is 61448483227. The next prime is 61448483311. The reversal of 61448483257 is 75238484416.

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 a cyclic number.

It is not a de Polignac number, because 61448483257 - 2¹⁹ = 61447958969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61448483207) 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, 4389177369 + ... + 4389177382.

It is an arithmetic number, because the mean of its divisors is an integer number (17556709504).

Almost surely, 2^61448483257 is an apocalyptic number.

It is an amenable number.

61448483257 is a deficient number, since it is larger than the sum of its proper divisors (8778354759).

61448483257 is an equidigital number, since it uses as much as digits as its factorization.

61448483257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8778354758.

The product of its digits is 5160960, while the sum is 52.

The spelling of 61448483257 in words is "sixty-one billion, four hundred forty-eight million, four hundred eighty-three thousand, two hundred fifty-seven".