73545401645542 has 16 divisors (see below), whose sum is σ = 113128865978400. Its totient is φ = 35847418425280.

The previous prime is 73545401645539. The next prime is 73545401645561. The reversal of 73545401645542 is 24554610454537.

It is a happy number.

It is a super-2 number, since 2×73545401645542² (a number of 29 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 7 ways as a sum of consecutive naturals, for example, 2909680417 + ... + 2909705692.

It is an arithmetic number, because the mean of its divisors is an integer number (7070554123650).

Almost surely, 2^{73545401645542} is an apocalyptic number.

73545401645542 is a deficient number, since it is larger than the sum of its proper divisors (39583464332858).

73545401645542 is a wasteful number, since it uses less digits than its factorization.

73545401645542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5819386271.

The product of its (nonzero) digits is 40320000, while the sum is 55.

The spelling of 73545401645542 in words is "seventy-three trillion, five hundred forty-five billion, four hundred one million, six hundred forty-five thousand, five hundred forty-two".