61550632836 has 405 divisors, whose sum is σ = 206894488647. Its totient is φ = 15897863520.

The previous prime is 61550632807. The next prime is 61550632873. The reversal of 61550632836 is 63823605516.

The square root of 61550632836 is 248094.

It is a perfect power (a square), and thus also a powerful number.

61550632836 is a `hidden beast` number, since 6 + 1 + 5 + 5 + 0 + 632 + 8 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 61550632791 and 61550632800.

It is an unprimeable number.

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 in 134 ways as a sum of consecutive naturals, for example, 343858195 + ... + 343858373.

Almost surely, 2^61550632836 is an apocalyptic number.

61550632836 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61550632836 is the 248094-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61550632836

61550632836 is an abundant number, since it is smaller than the sum of its proper divisors (145343855811).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61550632836 is a wasteful number, since it uses less digits than its factorization.

61550632836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 61550632836 in words is "sixty-one billion, five hundred fifty million, six hundred thirty-two thousand, eight hundred thirty-six".