61232435550 has 144 divisors (see below), whose sum is σ = 193272036048. Its totient is φ = 13702348800.

The previous prime is 61232435543. The next prime is 61232435591. The reversal of 61232435550 is 5553423216.

61232435550 is a `hidden beast` number, since 61 + 2 + 3 + 2 + 43 + 5 + 550 = 666.

It is a super-2 number, since 2×61232435550² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 411427 + ... + 540126.

It is an arithmetic number, because the mean of its divisors is an integer number (1342166917).

Almost surely, 2^61232435550 is an apocalyptic number.

61232435550 is an abundant number, since it is smaller than the sum of its proper divisors (132039600498).

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

61232435550 is a wasteful number, since it uses less digits than its factorization.

61232435550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951595 (or 951587 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 61232435550 its reverse (5553423216), we get a palindrome (66785858766).

The spelling of 61232435550 in words is "sixty-one billion, two hundred thirty-two million, four hundred thirty-five thousand, five hundred fifty".