67916786945 has 32 divisors (see below), whose sum is σ = 96344211456. Its totient is φ = 44977060800.

The previous prime is 67916786941. The next prime is 67916786981. The reversal of 67916786945 is 54968761976.

67916786945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 67916786945 - 2² = 67916786941 is a prime.

It is a super-2 number, since 2×67916786945² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67916786941) 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, 468992 + ... + 596478.

It is an arithmetic number, because the mean of its divisors is an integer number (3010756608).

Almost surely, 2^67916786945 is an apocalyptic number.

It is an amenable number.

67916786945 is a deficient number, since it is larger than the sum of its proper divisors (28427424511).

67916786945 is a wasteful number, since it uses less digits than its factorization.

67916786945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128021.

The product of its digits is 137168640, while the sum is 68.

The spelling of 67916786945 in words is "sixty-seven billion, nine hundred sixteen million, seven hundred eighty-six thousand, nine hundred forty-five".