68477372147623 has 4 divisors (see below), whose sum is σ = 70686319636288. Its totient is φ = 66268424658960.

The previous prime is 68477372147617. The next prime is 68477372147669. The reversal of 68477372147623 is 32674127377486.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68477372147623 - 2¹⁷ = 68477372016551 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 (68477372147683) 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, 1104473744286 + ... + 1104473744347.

It is an arithmetic number, because the mean of its divisors is an integer number (17671579909072).

Almost surely, 2^{68477372147623} is an apocalyptic number.

68477372147623 is a deficient number, since it is larger than the sum of its proper divisors (2208947488665).

68477372147623 is a wasteful number, since it uses less digits than its factorization.

68477372147623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208947488664.

The product of its digits is 398297088, while the sum is 67.

The spelling of 68477372147623 in words is "sixty-eight trillion, four hundred seventy-seven billion, three hundred seventy-two million, one hundred forty-seven thousand, six hundred twenty-three".