61806000575506 has 24 divisors (see below), whose sum is σ = 101985661805580. Its totient is φ = 28070925384480.

The previous prime is 61806000575503. The next prime is 61806000575537. The reversal of 61806000575506 is 60557500060816.

It can be written as a sum of positive squares in 2 ways, for example, as 61076710195281 + 729290380225 = 7815159^2 + 853985^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61806000575506.

It is not an unprimeable number, because it can be changed into a prime (61806000575503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102932941 + ... + 103531648.

Almost surely, 2^{61806000575506} is an apocalyptic number.

61806000575506 is a deficient number, since it is larger than the sum of its proper divisors (40179661230074).

61806000575506 is a wasteful number, since it uses less digits than its factorization.

61806000575506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206465850 (or 206465839 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 61806000575506 in words is "sixty-one trillion, eight hundred six billion, five hundred seventy-five thousand, five hundred six".