72121051873300 has 72 divisors (see below), whose sum is σ = 161586285093632. Its totient is φ = 27911755872000.

The previous prime is 72121051873267. The next prime is 72121051873307. The reversal of 72121051873300 is 337815012127.

It is a super-2 number, since 2×72121051873300² (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 (72121051873307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11742160 + ... + 16796440.

Almost surely, 2^{72121051873300} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72121051873300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80793142546816).

72121051873300 is an abundant number, since it is smaller than the sum of its proper divisors (89465233220332).

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

72121051873300 is a wasteful number, since it uses less digits than its factorization.

72121051873300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058929 (or 5058922 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

Adding to 72121051873300 its reverse (337815012127), we get a palindrome (72458866885427).

The spelling of 72121051873300 in words is "seventy-two trillion, one hundred twenty-one billion, fifty-one million, eight hundred seventy-three thousand, three hundred".