61615611506066 has 8 divisors (see below), whose sum is σ = 93338500598604. Its totient is φ = 30502777973200.

The previous prime is 61615611506047. The next prime is 61615611506081. The reversal of 61615611506066 is 66060511651616.

It can be written as a sum of positive squares in 2 ways, for example, as 61276096689025 + 339514817041 = 7827905^2 + 582679^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 152513889665 + ... + 152513890068.

Almost surely, 2^{61615611506066} is an apocalyptic number.

61615611506066 is a deficient number, since it is larger than the sum of its proper divisors (31722889092538).

61615611506066 is a wasteful number, since it uses less digits than its factorization.

61615611506066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305027779836.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 61615611506066 in words is "sixty-one trillion, six hundred fifteen billion, six hundred eleven million, five hundred six thousand, sixty-six".