61329126357 has 12 divisors (see below), whose sum is σ = 88588827340. Its totient is φ = 40885017408.

The previous prime is 61329126329. The next prime is 61329126377. The reversal of 61329126357 is 75362192316.

61329126357 is a `hidden beast` number, since 6 + 1 + 3 + 2 + 9 + 1 + 2 + 635 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32208045156 + 29121081201 = 179466^2 + 170649^2 .

It is not a de Polignac number, because 61329126357 - 2²⁶ = 61262017493 is a prime.

It is a super-2 number, since 2×61329126357² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61329126377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442119 + ... + 564027.

Almost surely, 2^61329126357 is an apocalyptic number.

It is an amenable number.

61329126357 is a deficient number, since it is larger than the sum of its proper divisors (27259700983).

61329126357 is a wasteful number, since it uses less digits than its factorization.

61329126357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177812 (or 177809 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 61329126357 in words is "sixty-one billion, three hundred twenty-nine million, one hundred twenty-six thousand, three hundred fifty-seven".