61911520044646 has 8 divisors (see below), whose sum is σ = 93423371564880. Its totient is φ = 30770396189688.

The previous prime is 61911520044587. The next prime is 61911520044707. The reversal of 61911520044646 is 64644002511916.

61911520044646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61911520044646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92681915901 + ... + 92681916568.

It is an arithmetic number, because the mean of its divisors is an integer number (11677921445610).

Almost surely, 2^{61911520044646} is an apocalyptic number.

61911520044646 is a deficient number, since it is larger than the sum of its proper divisors (31511851520234).

61911520044646 is a wasteful number, since it uses less digits than its factorization.

61911520044646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185363832638.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 61911520044646 in words is "sixty-one trillion, nine hundred eleven billion, five hundred twenty million, forty-four thousand, six hundred forty-six".