60721454444 has 72 divisors (see below), whose sum is σ = 127539775440. Its totient is φ = 25205644800.

The previous prime is 60721454429. The next prime is 60721454447. The reversal of 60721454444 is 44445412706.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (60721454447) 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, 1089824 + ... + 1144184.

It is an arithmetic number, because the mean of its divisors is an integer number (1771385770).

Almost surely, 2^60721454444 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 60721454444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63769887720).

60721454444 is an abundant number, since it is smaller than the sum of its proper divisors (66818320996).

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

60721454444 is a wasteful number, since it uses less digits than its factorization.

60721454444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54559 (or 54550 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 60721454444 in words is "sixty billion, seven hundred twenty-one million, four hundred fifty-four thousand, four hundred forty-four".