60645978623 has 4 divisors (see below), whose sum is σ = 61500147408. Its totient is φ = 59791809840.

The previous prime is 60645978583. The next prime is 60645978641. The reversal of 60645978623 is 32687954606.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32687954606 = 2 ⋅16343977303.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60645978623 is a prime.

It is a super-2 number, since 2×60645978623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60645918623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427084286 + ... + 427084427.

It is an arithmetic number, because the mean of its divisors is an integer number (15375036852).

Almost surely, 2^60645978623 is an apocalyptic number.

60645978623 is a deficient number, since it is larger than the sum of its proper divisors (854168785).

60645978623 is an equidigital number, since it uses as much as digits as its factorization.

60645978623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854168784.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 60645978623 in words is "sixty billion, six hundred forty-five million, nine hundred seventy-eight thousand, six hundred twenty-three".