4661816447375 has 64 divisors (see below), whose sum is σ = 6141930762240. Its totient is φ = 3525667200000.

The previous prime is 4661816447347. The next prime is 4661816447437. The reversal of 4661816447375 is 5737446181664.

It is a Cunningham number, because it is equal to 2159124²-1.

It is not a de Polignac number, because 4661816447375 - 2¹⁸ = 4661816185231 is a prime.

It is a super-2 number, since 2×4661816447375² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 209423996 + ... + 209446254.

It is an arithmetic number, because the mean of its divisors is an integer number (95967668160).

Almost surely, 2^{4661816447375} is an apocalyptic number.

4661816447375 is a deficient number, since it is larger than the sum of its proper divisors (1480114314865).

4661816447375 is a wasteful number, since it uses less digits than its factorization.

4661816447375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23145 (or 23135 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 62.

The spelling of 4661816447375 in words is "four trillion, six hundred sixty-one billion, eight hundred sixteen million, four hundred forty-seven thousand, three hundred seventy-five".