61001105650 has 24 divisors (see below), whose sum is σ = 113484405060. Its totient is φ = 24395636160.

The previous prime is 61001105611. The next prime is 61001105677. The reversal of 61001105650 is 5650110016.

61001105650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 25665001209 + 35336104441 = 160203^2 + 187979^2 .

It is a super-2 number, since 2×61001105650² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141892 + ... + 377008.

Almost surely, 2^61001105650 is an apocalyptic number.

61001105650 is a deficient number, since it is larger than the sum of its proper divisors (52483299410).

61001105650 is a wasteful number, since it uses less digits than its factorization.

61001105650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240318 (or 240313 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 61001105650 its reverse (5650110016), we get a palindrome (66651215666).

The spelling of 61001105650 in words is "sixty-one billion, one million, one hundred five thousand, six hundred fifty".