60721522664 has 16 divisors (see below), whose sum is σ = 124203114720. Its totient is φ = 27600692080.

The previous prime is 60721522649. The next prime is 60721522681. The reversal of 60721522664 is 46622512706.

60721522664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345008564 + ... + 345008739.

It is an arithmetic number, because the mean of its divisors is an integer number (7762694670).

Almost surely, 2^60721522664 is an apocalyptic number.

It is an amenable number.

60721522664 is an abundant number, since it is smaller than the sum of its proper divisors (63481592056).

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

60721522664 is a wasteful number, since it uses less digits than its factorization.

60721522664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690017320 (or 690017316 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

It can be divided in two parts, 60721 and 522664, that added together give a palindrome (583385).

The spelling of 60721522664 in words is "sixty billion, seven hundred twenty-one million, five hundred twenty-two thousand, six hundred sixty-four".