61325201636 has 6 divisors (see below), whose sum is σ = 107319102870. Its totient is φ = 30662600816.

The previous prime is 61325201627. The next prime is 61325201657. The reversal of 61325201636 is 63610252316.

It can be written as a sum of positive squares in only one way, i.e., 31686136036 + 29639065600 = 178006^2 + 172160^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61325201596 and 61325201605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7665650201 + ... + 7665650208.

It is an arithmetic number, because the mean of its divisors is an integer number (17886517145).

Almost surely, 2^61325201636 is an apocalyptic number.

It is an amenable number.

61325201636 is a deficient number, since it is larger than the sum of its proper divisors (45993901234).

61325201636 is a wasteful number, since it uses less digits than its factorization.

61325201636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15331300413 (or 15331300411 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 61325201636 in words is "sixty-one billion, three hundred twenty-five million, two hundred one thousand, six hundred thirty-six".