72550422773445 has 32 divisors (see below), whose sum is σ = 117085041368064. Its totient is φ = 38360210457600.

The previous prime is 72550422773431. The next prime is 72550422773447. The reversal of 72550422773445 is 54437722405527.

It is a happy number.

It is not a de Polignac number, because 72550422773445 - 2¹¹ = 72550422771397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72550422773447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44192226 + ... + 45804515.

It is an arithmetic number, because the mean of its divisors is an integer number (3658907542752).

Almost surely, 2^{72550422773445} is an apocalyptic number.

It is an amenable number.

72550422773445 is a deficient number, since it is larger than the sum of its proper divisors (44534618594619).

72550422773445 is a wasteful number, since it uses less digits than its factorization.

72550422773445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89997213.

The product of its (nonzero) digits is 65856000, while the sum is 57.

The spelling of 72550422773445 in words is "seventy-two trillion, five hundred fifty billion, four hundred twenty-two million, seven hundred seventy-three thousand, four hundred forty-five".