61255307893 has 16 divisors (see below), whose sum is σ = 66574520320. Its totient is φ = 56024027136.

The previous prime is 61255307879. The next prime is 61255307899. The reversal of 61255307893 is 39870355216.

61255307893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61255307893 - 2³³ = 52665373301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61255307899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245496 + ... + 1293742.

It is an arithmetic number, because the mean of its divisors is an integer number (4160907520).

Almost surely, 2^61255307893 is an apocalyptic number.

It is an amenable number.

61255307893 is a deficient number, since it is larger than the sum of its proper divisors (5319212427).

61255307893 is a wasteful number, since it uses less digits than its factorization.

61255307893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49156.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 61255307893 in words is "sixty-one billion, two hundred fifty-five million, three hundred seven thousand, eight hundred ninety-three".