61683160618 has 4 divisors (see below), whose sum is σ = 92524740930. Its totient is φ = 30841580308.

The previous prime is 61683160559. The next prime is 61683160639. The reversal of 61683160618 is 81606138616.

61683160618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61581896649 + 101263969 = 248157^2 + 10063^2 .

It is a super-2 number, since 2×61683160618² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15420790153 + ... + 15420790156.

Almost surely, 2^61683160618 is an apocalyptic number.

61683160618 is a deficient number, since it is larger than the sum of its proper divisors (30841580312).

61683160618 is a wasteful number, since it uses less digits than its factorization.

61683160618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30841580311.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 61683160618 in words is "sixty-one billion, six hundred eighty-three million, one hundred sixty thousand, six hundred eighteen".