61355025361 has 8 divisors (see below), whose sum is σ = 70273468160. Its totient is φ = 52474942368.

The previous prime is 61355025343. The next prime is 61355025401. The reversal of 61355025361 is 16352055316.

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 61355025361 - 2¹¹ = 61355023313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61355025361.

It is not an unprimeable number, because it can be changed into a prime (61355025301) 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 7 ways as a sum of consecutive naturals, for example, 9586521 + ... + 9592918.

It is an arithmetic number, because the mean of its divisors is an integer number (8784183520).

Almost surely, 2^61355025361 is an apocalyptic number.

It is an amenable number.

61355025361 is a deficient number, since it is larger than the sum of its proper divisors (8918442799).

61355025361 is a wasteful number, since it uses less digits than its factorization.

61355025361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19179903.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 61355025361 in words is "sixty-one billion, three hundred fifty-five million, twenty-five thousand, three hundred sixty-one".