67621475023 has 2 divisors, whose sum is σ = 67621475024. Its totient is φ = 67621475022.

The previous prime is 67621474979. The next prime is 67621475069. The reversal of 67621475023 is 32057412676.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67621475023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67621485023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33810737511 + 33810737512.

It is an arithmetic number, because the mean of its divisors is an integer number (33810737512).

Almost surely, 2^67621475023 is an apocalyptic number.

67621475023 is a deficient number, since it is larger than the sum of its proper divisors (1).

67621475023 is an equidigital number, since it uses as much as digits as its factorization.

67621475023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 43.

Adding to 67621475023 its reverse (32057412676), we get a palindrome (99678887699).

The spelling of 67621475023 in words is "sixty-seven billion, six hundred twenty-one million, four hundred seventy-five thousand, twenty-three".