61001105652 has 108 divisors (see below), whose sum is σ = 166526199840. Its totient is φ = 18815346144.

The previous prime is 61001105611. The next prime is 61001105677. The reversal of 61001105652 is 25650110016.

It is a happy number.

61001105652 is a `hidden beast` number, since 6 + 1 + 0 + 0 + 1 + 1 + 0 + 5 + 652 = 666.

61001105652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61001105652² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 504249 + ... + 613407.

Almost surely, 2^61001105652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61001105652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83263099920).

61001105652 is an abundant number, since it is smaller than the sum of its proper divisors (105525094188).

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

61001105652 is a wasteful number, since it uses less digits than its factorization.

61001105652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109250 (or 109226 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 61001105652 its reverse (25650110016), we get a palindrome (86651215668).

The spelling of 61001105652 in words is "sixty-one billion, one million, one hundred five thousand, six hundred fifty-two".