61253435215 has 16 divisors (see below), whose sum is σ = 86714542080. Its totient is φ = 40647440160.

The previous prime is 61253435207. The next prime is 61253435219. The reversal of 61253435215 is 51253435216.

It is not a de Polignac number, because 61253435215 - 2³ = 61253435207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61253435219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28226305 + ... + 28228474.

It is an arithmetic number, because the mean of its divisors is an integer number (5419658880).

Almost surely, 2^61253435215 is an apocalyptic number.

61253435215 is a deficient number, since it is larger than the sum of its proper divisors (25461106865).

61253435215 is a wasteful number, since it uses less digits than its factorization.

61253435215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56454822.

The product of its digits is 108000, while the sum is 37.

Subtracting from 61253435215 its reverse (51253435216), we obtain a palindrome (9999999999).

The spelling of 61253435215 in words is "sixty-one billion, two hundred fifty-three million, four hundred thirty-five thousand, two hundred fifteen".