60988747681 has 27 divisors (see below), whose sum is σ = 66018754521. Its totient is φ = 56330360064.

The previous prime is 60988747679. The next prime is 60988747723. The reversal of 60988747681 is 18674788906.

60988747681 = 349² + 350² + ... + 5677².

The square root of 60988747681 is 246959.

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 7701642081 + 53287105600 = 87759^2 + 230840^2 .

It is not a de Polignac number, because 60988747681 - 2¹ = 60988747679 is a prime.

It is a super-2 number, since 2×60988747681² (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 (60988747601) 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, 306476020 + ... + 306476218.

Almost surely, 2^60988747681 is an apocalyptic number.

60988747681 is the 246959-th square number.

60988747681 is the 123480-th centered octagonal number.

It is an amenable number.

60988747681 is a deficient number, since it is larger than the sum of its proper divisors (5030006840).

60988747681 is an frugal number, since it uses more digits than its factorization.

60988747681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 64.

Multiplying 60988747681 by its sum of digits (64), we get a square (3903279851584 = 1975672²).

The spelling of 60988747681 in words is "sixty billion, nine hundred eighty-eight million, seven hundred forty-seven thousand, six hundred eighty-one".