72213434553 has 16 divisors (see below), whose sum is σ = 103837375040. Its totient is φ = 44376341184.

The previous prime is 72213434551. The next prime is 72213434591. The reversal of 72213434553 is 35543431227.

It is a happy number.

It is not a de Polignac number, because 72213434553 - 2¹ = 72213434551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72213434551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1278151 + ... + 1333452.

It is an arithmetic number, because the mean of its divisors is an integer number (6489835940).

Almost surely, 2^72213434553 is an apocalyptic number.

It is an amenable number.

72213434553 is a deficient number, since it is larger than the sum of its proper divisors (31623940487).

72213434553 is a wasteful number, since it uses less digits than its factorization.

72213434553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612328.

The product of its digits is 302400, while the sum is 39.

The spelling of 72213434553 in words is "seventy-two billion, two hundred thirteen million, four hundred thirty-four thousand, five hundred fifty-three".