72533156614220 has 48 divisors (see below), whose sum is σ = 157261724218368. Its totient is φ = 28072251142080.

The previous prime is 72533156614213. The next prime is 72533156614223. The reversal of 72533156614220 is 2241665133527.

It is a happy number.

It is a super-2 number, since 2×72533156614220² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72533156614223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7207502 + ... + 14036181.

It is an arithmetic number, because the mean of its divisors is an integer number (3276285921216).

Almost surely, 2^{72533156614220} is an apocalyptic number.

It is an amenable number.

72533156614220 is an abundant number, since it is smaller than the sum of its proper divisors (84728567604148).

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

72533156614220 is a wasteful number, since it uses less digits than its factorization.

72533156614220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21249230 (or 21249228 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 72533156614220 in words is "seventy-two trillion, five hundred thirty-three billion, one hundred fifty-six million, six hundred fourteen thousand, two hundred twenty".