67909663761 has 16 divisors (see below), whose sum is σ = 92486064384. Its totient is φ = 44303464064.

The previous prime is 67909663733. The next prime is 67909663769. The reversal of 67909663761 is 16736690976.

It is a cyclic number.

It is not a de Polignac number, because 67909663761 - 2⁶ = 67909663697 is a prime.

It is a super-2 number, since 2×67909663761² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67909663695 and 67909663704.

It is not an unprimeable number, because it can be changed into a prime (67909663769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071391 + ... + 1133003.

It is an arithmetic number, because the mean of its divisors is an integer number (5780379024).

Almost surely, 2^67909663761 is an apocalyptic number.

It is an amenable number.

67909663761 is a deficient number, since it is larger than the sum of its proper divisors (24576400623).

67909663761 is a wasteful number, since it uses less digits than its factorization.

67909663761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69480.

The product of its (nonzero) digits is 15431472, while the sum is 60.

The spelling of 67909663761 in words is "sixty-seven billion, nine hundred nine million, six hundred sixty-three thousand, seven hundred sixty-one".