60605509991 has 16 divisors (see below), whose sum is σ = 65674657440. Its totient is φ = 55594830720.

The previous prime is 60605509973. The next prime is 60605509999. The reversal of 60605509991 is 19990550606.

It is not a de Polignac number, because 60605509991 - 2¹⁴ = 60605493607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60605509999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6429680 + ... + 6439098.

It is an arithmetic number, because the mean of its divisors is an integer number (4104666090).

Almost surely, 2^60605509991 is an apocalyptic number.

60605509991 is a deficient number, since it is larger than the sum of its proper divisors (5069147449).

60605509991 is a wasteful number, since it uses less digits than its factorization.

60605509991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12466.

The product of its (nonzero) digits is 656100, while the sum is 50.

The spelling of 60605509991 in words is "sixty billion, six hundred five million, five hundred nine thousand, nine hundred ninety-one".