73561265643612 has 24 divisors (see below), whose sum is σ = 171650819732112. Its totient is φ = 24519298086400.

The previous prime is 73561265643611. The next prime is 73561265643623. The reversal of 73561265643612 is 21634656216537.

73561265643612 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×73561265643612² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73561265643611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140201589 + ... + 140725292.

It is an arithmetic number, because the mean of its divisors is an integer number (7152117488838).

Almost surely, 2^{73561265643612} is an apocalyptic number.

It is an amenable number.

73561265643612 is an abundant number, since it is smaller than the sum of its proper divisors (98089554088500).

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

73561265643612 is a wasteful number, since it uses less digits than its factorization.

73561265643612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280948709 (or 280948707 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 57.

The spelling of 73561265643612 in words is "seventy-three trillion, five hundred sixty-one billion, two hundred sixty-five million, six hundred forty-three thousand, six hundred twelve".