67920783609 has 48 divisors (see below), whose sum is σ = 107845805760. Its totient is φ = 37900275840.

The previous prime is 67920783571. The next prime is 67920783611. The reversal of 67920783609 is 90638702976.

It is a happy number.

It is not a de Polignac number, because 67920783609 - 2⁹ = 67920783097 is a prime.

It is a super-2 number, since 2×67920783609² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67920783659) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1219167 + ... + 1273659.

It is an arithmetic number, because the mean of its divisors is an integer number (2246787620).

Almost surely, 2^67920783609 is an apocalyptic number.

It is an amenable number.

67920783609 is a deficient number, since it is larger than the sum of its proper divisors (39925022151).

67920783609 is a wasteful number, since it uses less digits than its factorization.

67920783609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54710 (or 54703 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 67920783609 in words is "sixty-seven billion, nine hundred twenty million, seven hundred eighty-three thousand, six hundred nine".