61520325261305 has 8 divisors (see below), whose sum is σ = 75541236600192. Its totient is φ = 48071696017968.

The previous prime is 61520325261281. The next prime is 61520325261319. The reversal of 61520325261305 is 50316252302516.

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 61520325261305 - 2⁸ = 61520325261049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143070523649 + ... + 143070524078.

It is an arithmetic number, because the mean of its divisors is an integer number (9442654575024).

Almost surely, 2^{61520325261305} is an apocalyptic number.

It is an amenable number.

61520325261305 is a deficient number, since it is larger than the sum of its proper divisors (14020911338887).

61520325261305 is a wasteful number, since it uses less digits than its factorization.

61520325261305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286141047775.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 61520325261305 in words is "sixty-one trillion, five hundred twenty billion, three hundred twenty-five million, two hundred sixty-one thousand, three hundred five".