61130359789 has 8 divisors (see below), whose sum is σ = 66958203960. Its totient is φ = 55550509056.

The previous prime is 61130359781. The next prime is 61130359811. The reversal of 61130359789 is 98795303116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23790594564 + 37339765225 = 154242^2 + 193235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61130359789 - 2³ = 61130359781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61130359781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61997844 + ... + 61998829.

It is an arithmetic number, because the mean of its divisors is an integer number (8369775495).

Almost surely, 2^61130359789 is an apocalyptic number.

It is an amenable number.

61130359789 is a deficient number, since it is larger than the sum of its proper divisors (5827844171).

61130359789 is a wasteful number, since it uses less digits than its factorization.

61130359789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123996719.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 61130359789 in words is "sixty-one billion, one hundred thirty million, three hundred fifty-nine thousand, seven hundred eighty-nine".