61425836135 has 32 divisors (see below), whose sum is σ = 76406088192. Its totient is φ = 47357706240.

The previous prime is 61425836113. The next prime is 61425836137. The reversal of 61425836135 is 53163852416.

It is a happy number.

61425836135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61425836135 - 2¹⁸ = 61425573991 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 (61425836137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65555387 + ... + 65556323.

It is an arithmetic number, because the mean of its divisors is an integer number (2387690256).

Almost surely, 2^61425836135 is an apocalyptic number.

61425836135 is a deficient number, since it is larger than the sum of its proper divisors (14980252057).

61425836135 is a wasteful number, since it uses less digits than its factorization.

61425836135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283.

The product of its digits is 518400, while the sum is 44.

The spelling of 61425836135 in words is "sixty-one billion, four hundred twenty-five million, eight hundred thirty-six thousand, one hundred thirty-five".