67920413556947 has 16 divisors (see below), whose sum is σ = 78517938240000. Its totient is φ = 57546914927040.

The previous prime is 67920413556923. The next prime is 67920413557001. The reversal of 67920413556947 is 74965531402976.

It is not a de Polignac number, because 67920413556947 - 2¹⁰ = 67920413555923 is a prime.

It is a super-2 number, since 2×67920413556947² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67920413556907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13399079 + ... + 17758832.

It is an arithmetic number, because the mean of its divisors is an integer number (4907371140000).

Almost surely, 2^{67920413556947} is an apocalyptic number.

67920413556947 is a deficient number, since it is larger than the sum of its proper divisors (10597524683053).

67920413556947 is a wasteful number, since it uses less digits than its factorization.

67920413556947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31161506.

The product of its (nonzero) digits is 342921600, while the sum is 68.

The spelling of 67920413556947 in words is "sixty-seven trillion, nine hundred twenty billion, four hundred thirteen million, five hundred fifty-six thousand, nine hundred forty-seven".