61384164496 has 20 divisors (see below), whose sum is σ = 118942526700. Its totient is φ = 30689318912.

The previous prime is 61384164461. The next prime is 61384164497. The reversal of 61384164496 is 69446148316.

It can be written as a sum of positive squares in 2 ways, for example, as 7151070096 + 54233094400 = 84564^2 + 232880^2 .

It is not an unprimeable number, because it can be changed into a prime (61384164497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16860 + ... + 350788.

It is an arithmetic number, because the mean of its divisors is an integer number (5947126335).

Almost surely, 2^61384164496 is an apocalyptic number.

It is an amenable number.

61384164496 is a deficient number, since it is larger than the sum of its proper divisors (57558362204).

61384164496 is a wasteful number, since it uses less digits than its factorization.

61384164496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345426 (or 345420 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The spelling of 61384164496 in words is "sixty-one billion, three hundred eighty-four million, one hundred sixty-four thousand, four hundred ninety-six".