61204514666 has 8 divisors (see below), whose sum is σ = 92753233860. Its totient is φ = 30286770048.

The previous prime is 61204514663. The next prime is 61204514687. The reversal of 61204514666 is 66641540216.

It can be written as a sum of positive squares in 2 ways, for example, as 54162787441 + 7041727225 = 232729^2 + 83915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61204514663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157743401 + ... + 157743788.

Almost surely, 2^61204514666 is an apocalyptic number.

61204514666 is a deficient number, since it is larger than the sum of its proper divisors (31548719194).

61204514666 is a wasteful number, since it uses less digits than its factorization.

61204514666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315487288.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 61204514666 in words is "sixty-one billion, two hundred four million, five hundred fourteen thousand, six hundred sixty-six".