61916430336618 has 64 divisors (see below), whose sum is σ = 147323506176000. Its totient is φ = 17100049786560.

The previous prime is 61916430336611. The next prime is 61916430336689. The reversal of 61916430336618 is 81663303461916.

It is not an unprimeable number, because it can be changed into a prime (61916430336611) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 456664318 + ... + 456799881.

It is an arithmetic number, because the mean of its divisors is an integer number (2301929784000).

Almost surely, 2^{61916430336618} is an apocalyptic number.

61916430336618 is an abundant number, since it is smaller than the sum of its proper divisors (85407075839382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61916430336618 is a wasteful number, since it uses less digits than its factorization.

61916430336618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913464307.

The product of its (nonzero) digits is 10077696, while the sum is 57.

The spelling of 61916430336618 in words is "sixty-one trillion, nine hundred sixteen billion, four hundred thirty million, three hundred thirty-six thousand, six hundred eighteen".