61000665105552 has 20 divisors (see below), whose sum is σ = 157585051522800. Its totient is φ = 20333555035168.

The previous prime is 61000665105551. The next prime is 61000665105563. The reversal of 61000665105552 is 25550156600016.

It is a super-2 number, since 2×61000665105552² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61000665105551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635423594802 + ... + 635423594897.

It is an arithmetic number, because the mean of its divisors is an integer number (7879252576140).

Almost surely, 2^{61000665105552} is an apocalyptic number.

It is an amenable number.

61000665105552 is an abundant number, since it is smaller than the sum of its proper divisors (96584386417248).

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

61000665105552 is a wasteful number, since it uses less digits than its factorization.

61000665105552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270847189710 (or 1270847189704 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 61000665105552 in words is "sixty-one trillion, six hundred sixty-five million, one hundred five thousand, five hundred fifty-two".