60177486721 has 27 divisors (see below), whose sum is σ = 68594231433. Its totient is φ = 52751677440.

The previous prime is 60177486689. The next prime is 60177486751. The reversal of 60177486721 is 12768477106.

The square root of 60177486721 is 245311.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 436350321 + 59741136400 = 20889^2 + 244420^2 .

It is not a de Polignac number, because 60177486721 - 2⁵ = 60177486689 is a prime.

It is a super-2 number, since 2×60177486721² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60177486751) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 78253825 + ... + 78254593.

Almost surely, 2^60177486721 is an apocalyptic number.

60177486721 is the 245311-st square number.

60177486721 is the 122656-th centered octagonal number.

It is an amenable number.

60177486721 is a deficient number, since it is larger than the sum of its proper divisors (8416744712).

60177486721 is an frugal number, since it uses more digits than its factorization.

60177486721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 49.

Multiplying 60177486721 by its sum of digits (49), we get a square (2948696849329 = 1717177²).

The spelling of 60177486721 in words is "sixty billion, one hundred seventy-seven million, four hundred eighty-six thousand, seven hundred twenty-one".