67491016719 has 32 divisors (see below), whose sum is σ = 111549021696. Its totient is φ = 35412372480.

The previous prime is 67491016679. The next prime is 67491016729. The reversal of 67491016719 is 91761019476.

It is not a de Polignac number, because 67491016719 - 2⁷ = 67491016591 is a prime.

It is a super-2 number, since 2×67491016719² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67491016729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2290857 + ... + 2320130.

It is an arithmetic number, because the mean of its divisors is an integer number (3485906928).

Almost surely, 2^67491016719 is an apocalyptic number.

67491016719 is a deficient number, since it is larger than the sum of its proper divisors (44058004977).

67491016719 is a wasteful number, since it uses less digits than its factorization.

67491016719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611055.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 67491016719 in words is "sixty-seven billion, four hundred ninety-one million, sixteen thousand, seven hundred nineteen".