61505057274547 has 8 divisors (see below), whose sum is σ = 61522969027520. Its totient is φ = 61487147601000.

The previous prime is 61505057274541. The next prime is 61505057274559. The reversal of 61505057274547 is 74547275050516.

It is a happy number.

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 61505057274547 - 2³⁵ = 61470697536179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61505057274491 and 61505057274500.

It is not an unprimeable number, because it can be changed into a prime (61505057274541) 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, 59655172 + ... + 60677422.

It is an arithmetic number, because the mean of its divisors is an integer number (7690371128440).

Almost surely, 2^{61505057274547} is an apocalyptic number.

61505057274547 is a deficient number, since it is larger than the sum of its proper divisors (17911752973).

61505057274547 is a wasteful number, since it uses less digits than its factorization.

61505057274547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039713.

The product of its (nonzero) digits is 41160000, while the sum is 58.

The spelling of 61505057274547 in words is "sixty-one trillion, five hundred five billion, fifty-seven million, two hundred seventy-four thousand, five hundred forty-seven".