61690005548 has 6 divisors (see below), whose sum is σ = 107957509716. Its totient is φ = 30845002772.

The previous prime is 61690005547. The next prime is 61690005593. The reversal of 61690005548 is 84550009616.

It is a junction number, because it is equal to n+sod(n) for n = 61690005499 and 61690005508.

It is not an unprimeable number, because it can be changed into a prime (61690005541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7711250690 + ... + 7711250697.

It is an arithmetic number, because the mean of its divisors is an integer number (17992918286).

Almost surely, 2^61690005548 is an apocalyptic number.

It is an amenable number.

61690005548 is a deficient number, since it is larger than the sum of its proper divisors (46267504168).

61690005548 is a wasteful number, since it uses less digits than its factorization.

61690005548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15422501391 (or 15422501389 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 61690005548 in words is "sixty-one billion, six hundred ninety million, five thousand, five hundred forty-eight".