67149505605 has 32 divisors (see below), whose sum is σ = 132232875264. Its totient is φ = 28335614976.

The previous prime is 67149505571. The next prime is 67149505639. The reversal of 67149505605 is 50650594176.

It is an interprime number because it is at equal distance from previous prime (67149505571) and next prime (67149505639).

It is not a de Polignac number, because 67149505605 - 2²⁶ = 67082396741 is a prime.

It is a super-2 number, since 2×67149505605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24595524 + ... + 24598253.

It is an arithmetic number, because the mean of its divisors is an integer number (4132277352).

Almost surely, 2^67149505605 is an apocalyptic number.

67149505605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67149505605 is a deficient number, since it is larger than the sum of its proper divisors (65083369659).

67149505605 is a wasteful number, since it uses less digits than its factorization.

67149505605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49193805.

The product of its (nonzero) digits is 1134000, while the sum is 48.

The spelling of 67149505605 in words is "sixty-seven billion, one hundred forty-nine million, five hundred five thousand, six hundred five".