61623623016 has 128 divisors (see below), whose sum is σ = 176498150400. Its totient is φ = 19909955520.

The previous prime is 61623623003. The next prime is 61623623023. The reversal of 61623623016 is 61032632616.

61623623016 is a `hidden beast` number, since 6 + 1 + 6 + 23 + 623 + 0 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1191405 + ... + 1242051.

It is an arithmetic number, because the mean of its divisors is an integer number (1378891800).

Almost surely, 2^61623623016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61623623016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88249075200).

61623623016 is an abundant number, since it is smaller than the sum of its proper divisors (114874527384).

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

61623623016 is a wasteful number, since it uses less digits than its factorization.

61623623016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50836 (or 50826 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 61623623016 in words is "sixty-one billion, six hundred twenty-three million, six hundred twenty-three thousand, sixteen".