60991979545 has 16 divisors (see below), whose sum is σ = 83724883200. Its totient is φ = 41783701824.

The previous prime is 60991979533. The next prime is 60991979617. The reversal of 60991979545 is 54597919906.

It is a cyclic number.

It is not a de Polignac number, because 60991979545 - 2¹³ = 60991971353 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782470 + ... + 856879.

It is an arithmetic number, because the mean of its divisors is an integer number (5232805200).

Almost surely, 2^60991979545 is an apocalyptic number.

It is an amenable number.

60991979545 is a deficient number, since it is larger than the sum of its proper divisors (22732903655).

60991979545 is a wasteful number, since it uses less digits than its factorization.

60991979545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640424.

The product of its (nonzero) digits is 27556200, while the sum is 64.

The spelling of 60991979545 in words is "sixty billion, nine hundred ninety-one million, nine hundred seventy-nine thousand, five hundred forty-five".