61466050780551 has 12 divisors (see below), whose sum is σ = 89328984503928. Its totient is φ = 40725972295344.

The previous prime is 61466050780549. The next prime is 61466050780621. The reversal of 61466050780551 is 15508705066416.

61466050780551 is a `hidden beast` number, since 6 + 1 + 4 + 6 + 6 + 0 + 5 + 0 + 7 + 80 + 551 = 666.

It is not a de Polignac number, because 61466050780551 - 2¹ = 61466050780549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61466050730551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20949572760 + ... + 20949575693.

It is an arithmetic number, because the mean of its divisors is an integer number (7444082041994).

Almost surely, 2^{61466050780551} is an apocalyptic number.

61466050780551 is a deficient number, since it is larger than the sum of its proper divisors (27862933723377).

61466050780551 is a wasteful number, since it uses less digits than its factorization.

61466050780551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41899148622 (or 41899148619 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 61466050780551 in words is "sixty-one trillion, four hundred sixty-six billion, fifty million, seven hundred eighty thousand, five hundred fifty-one".