61364824436 has 6 divisors (see below), whose sum is σ = 107388442770. Its totient is φ = 30682412216.

The previous prime is 61364824429. The next prime is 61364824439. The reversal of 61364824436 is 63442846316.

It can be written as a sum of positive squares in only one way, i.e., 55932250000 + 5432574436 = 236500^2 + 73706^2 .

It is a super-2 number, since 2×61364824436² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61364824439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670603051 + ... + 7670603058.

It is an arithmetic number, because the mean of its divisors is an integer number (17898073795).

Almost surely, 2^61364824436 is an apocalyptic number.

It is an amenable number.

61364824436 is a deficient number, since it is larger than the sum of its proper divisors (46023618334).

61364824436 is a wasteful number, since it uses less digits than its factorization.

61364824436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15341206113 (or 15341206111 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 47.

The spelling of 61364824436 in words is "sixty-one billion, three hundred sixty-four million, eight hundred twenty-four thousand, four hundred thirty-six".