4781400611866 has 8 divisors (see below), whose sum is σ = 7173228803040. Its totient is φ = 2390324344188.

The previous prime is 4781400611851. The next prime is 4781400611873. The reversal of 4781400611866 is 6681160041874.

It is a happy number.

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

It is a super-2 number, since 2×4781400611866² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187964976 + ... + 187990411.

It is an arithmetic number, because the mean of its divisors is an integer number (896653600380).

Almost surely, 2^{4781400611866} is an apocalyptic number.

4781400611866 is a deficient number, since it is larger than the sum of its proper divisors (2391828191174).

4781400611866 is a wasteful number, since it uses less digits than its factorization.

4781400611866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375961748.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 4781400611866 in words is "four trillion, seven hundred eighty-one billion, four hundred million, six hundred eleven thousand, eight hundred sixty-six".