60720557140 has 24 divisors (see below), whose sum is σ = 130478594400. Its totient is φ = 23723380128.

The previous prime is 60720557111. The next prime is 60720557147. The reversal of 60720557140 is 4175502706.

It is a self number, because there is not a number n which added to its sum of digits gives 60720557140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60720557147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35301790 + ... + 35303509.

It is an arithmetic number, because the mean of its divisors is an integer number (5436608100).

Almost surely, 2^60720557140 is an apocalyptic number.

It is an amenable number.

60720557140 is an abundant number, since it is smaller than the sum of its proper divisors (69758037260).

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

60720557140 is a wasteful number, since it uses less digits than its factorization.

60720557140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70605351 (or 70605349 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 60720557140 in words is "sixty billion, seven hundred twenty million, five hundred fifty-seven thousand, one hundred forty".