61448057155337 has 4 divisors (see below), whose sum is σ = 61487171133456. Its totient is φ = 61408943177220.

The previous prime is 61448057155297. The next prime is 61448057155549. The reversal of 61448057155337 is 73355175084416.

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 61448057155337 - 2²⁰ = 61448056106761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61448057155237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19556986703 + ... + 19556989844.

It is an arithmetic number, because the mean of its divisors is an integer number (15371792783364).

Almost surely, 2^{61448057155337} is an apocalyptic number.

It is an amenable number.

61448057155337 is a deficient number, since it is larger than the sum of its proper divisors (39113978119).

61448057155337 is a wasteful number, since it uses less digits than its factorization.

61448057155337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39113978118.

The product of its (nonzero) digits is 42336000, while the sum is 59.

The spelling of 61448057155337 in words is "sixty-one trillion, four hundred forty-eight billion, fifty-seven million, one hundred fifty-five thousand, three hundred thirty-seven".