67064781504 has 56 divisors (see below), whose sum is σ = 202791129088. Its totient is φ = 19161365760.

The previous prime is 67064781491. The next prime is 67064781527. The reversal of 67064781504 is 40518746076.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24948352 + ... + 24951039.

Almost surely, 2^67064781504 is an apocalyptic number.

67064781504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

67064781504 is an abundant number, since it is smaller than the sum of its proper divisors (135726347584).

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

67064781504 is a wasteful number, since it uses less digits than its factorization.

67064781504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49899413 (or 49899403 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

It can be divided in two parts, 670647 and 81504, that added together give a triangular number (752151 = T₁₂₂₆).

The spelling of 67064781504 in words is "sixty-seven billion, sixty-four million, seven hundred eighty-one thousand, five hundred four".