61477655416 has 8 divisors (see below), whose sum is σ = 115270603920. Its totient is φ = 30738827704.

The previous prime is 61477655413. The next prime is 61477655467. The reversal of 61477655416 is 61455677416.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61477655413) 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 as a sum of consecutive naturals, namely, 3842353456 + ... + 3842353471.

It is an arithmetic number, because the mean of its divisors is an integer number (14408825490).

Almost surely, 2^61477655416 is an apocalyptic number.

It is an amenable number.

61477655416 is a deficient number, since it is larger than the sum of its proper divisors (53792948504).

61477655416 is a wasteful number, since it uses less digits than its factorization.

61477655416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684706933 (or 7684706929 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 52.

The spelling of 61477655416 in words is "sixty-one billion, four hundred seventy-seven million, six hundred fifty-five thousand, four hundred sixteen".