67764454156 has 18 divisors (see below), whose sum is σ = 137949067788. Its totient is φ = 29041908840.

The previous prime is 67764454067. The next prime is 67764454157. The reversal of 67764454156 is 65145446776.

It is a junction number, because it is equal to n+sod(n) for n = 67764454097 and 67764454106.

It is not an unprimeable number, because it can be changed into a prime (67764454157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172868310 + ... + 172868701.

Almost surely, 2^67764454156 is an apocalyptic number.

It is an amenable number.

67764454156 is an abundant number, since it is smaller than the sum of its proper divisors (70184613632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67764454156 is a wasteful number, since it uses less digits than its factorization.

67764454156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345737029 (or 345737020 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 55.

The spelling of 67764454156 in words is "sixty-seven billion, seven hundred sixty-four million, four hundred fifty-four thousand, one hundred fifty-six".