67530748949 has 16 divisors (see below), whose sum is σ = 73459206000. Its totient is φ = 61820734464.

The previous prime is 67530748931. The next prime is 67530748951. The reversal of 67530748949 is 94984703576.

It can be written as a sum of positive squares in 8 ways, for example, as 8243368849 + 59287380100 = 90793^2 + 243490^2 .

It is not a de Polignac number, because 67530748949 - 2²⁸ = 67262313493 is a prime.

It is a super-2 number, since 2×67530748949² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67530748891 and 67530748900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67530748849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166527 + ... + 2197475.

It is an arithmetic number, because the mean of its divisors is an integer number (4591200375).

Almost surely, 2^67530748949 is an apocalyptic number.

It is an amenable number.

67530748949 is a deficient number, since it is larger than the sum of its proper divisors (5928457051).

67530748949 is a wasteful number, since it uses less digits than its factorization.

67530748949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34472.

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 67530748949 in words is "sixty-seven billion, five hundred thirty million, seven hundred forty-eight thousand, nine hundred forty-nine".