61016065555 has 16 divisors (see below), whose sum is σ = 74388017088. Its totient is φ = 48036240000.

The previous prime is 61016065553. The next prime is 61016065589. The reversal of 61016065555 is 55556061016.

61016065555 is digitally balanced in base 2 and base 11, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61016065555 - 2¹ = 61016065553 is a prime.

It is a Duffinian number.

61016065555 is strictly pandigital in base 11.

It is not an unprimeable number, because it can be changed into a prime (61016065553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33205 + ... + 350905.

It is an arithmetic number, because the mean of its divisors is an integer number (4649251068).

Almost surely, 2^61016065555 is an apocalyptic number.

61016065555 is a deficient number, since it is larger than the sum of its proper divisors (13371951533).

61016065555 is a wasteful number, since it uses less digits than its factorization.

61016065555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318318.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 61016065555 in words is "sixty-one billion, sixteen million, sixty-five thousand, five hundred fifty-five".