67778005832433 has 24 divisors (see below), whose sum is σ = 106876733715752. Its totient is φ = 41138178455808.

The previous prime is 67778005832429. The next prime is 67778005832441. The reversal of 67778005832433 is 33423850087776.

It is a happy number.

67778005832433 is a `hidden beast` number, since 6 + 7 + 7 + 7 + 8 + 0 + 0 + 583 + 2 + 43 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3842101776384 + 63935904056049 = 1960128^2 + 7995993^2 .

It is not a de Polignac number, because 67778005832433 - 2² = 67778005832429 is a prime.

It is a super-4 number, since 4×67778005832433⁴ (a number of 56 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (67778005832233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3967794166 + ... + 3967811247.

Almost surely, 2^{67778005832433} is an apocalyptic number.

It is an amenable number.

67778005832433 is a deficient number, since it is larger than the sum of its proper divisors (39098727883319).

67778005832433 is a wasteful number, since it uses less digits than its factorization.

67778005832433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935605505 (or 7935605502 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 63.

The spelling of 67778005832433 in words is "sixty-seven trillion, seven hundred seventy-eight billion, five million, eight hundred thirty-two thousand, four hundred thirty-three".