61421318888 has 32 divisors (see below), whose sum is σ = 116070276000. Its totient is φ = 30469538880.

The previous prime is 61421318863. The next prime is 61421318897. The reversal of 61421318888 is 88881312416.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738358 + ... + 1773338.

It is an arithmetic number, because the mean of its divisors is an integer number (3627196125).

Almost surely, 2^61421318888 is an apocalyptic number.

It is an amenable number.

61421318888 is a deficient number, since it is larger than the sum of its proper divisors (54648957112).

61421318888 is a wasteful number, since it uses less digits than its factorization.

61421318888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36705 (or 36701 counting only the distinct ones).

The product of its digits is 589824, while the sum is 50.

The spelling of 61421318888 in words is "sixty-one billion, four hundred twenty-one million, three hundred eighteen thousand, eight hundred eighty-eight".