67813440434 has 16 divisors (see below), whose sum is σ = 103247644416. Its totient is φ = 33397650000.

The previous prime is 67813440361. The next prime is 67813440463. The reversal of 67813440434 is 43404431876.

It is a super-2 number, since 2×67813440434² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600159 + ... + 2626109.

It is an arithmetic number, because the mean of its divisors is an integer number (6452977776).

Almost surely, 2^67813440434 is an apocalyptic number.

67813440434 is a deficient number, since it is larger than the sum of its proper divisors (35434203982).

67813440434 is a wasteful number, since it uses less digits than its factorization.

67813440434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45521.

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 67813440434 in words is "sixty-seven billion, eight hundred thirteen million, four hundred forty thousand, four hundred thirty-four".