60728084640 has 120 divisors (see below), whose sum is σ = 214319577780. Its totient is φ = 16194152448.

The previous prime is 60728084623. The next prime is 60728084657. The reversal of 60728084640 is 4648082706.

It is an interprime number because it is at equal distance from previous prime (60728084623) and next prime (60728084657).

It can be written as a sum of positive squares in 2 ways, for example, as 58926591504 + 1801493136 = 242748^2 + 42444^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2329945 + ... + 2355864.

Almost surely, 2^60728084640 is an apocalyptic number.

60728084640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

60728084640 is an abundant number, since it is smaller than the sum of its proper divisors (153591493140).

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

60728084640 is a wasteful number, since it uses less digits than its factorization.

60728084640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685836 (or 4685819 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 60728084640 in words is "sixty billion, seven hundred twenty-eight million, eighty-four thousand, six hundred forty".