67620881454 has 32 divisors (see below), whose sum is σ = 154829942016. Its totient is φ = 19286760960.

The previous prime is 67620881443. The next prime is 67620881509. The reversal of 67620881454 is 45418802676.

It is a junction number, because it is equal to n+sod(n) for n = 67620881397 and 67620881406.

It is a congruent number.

It is an unprimeable number.

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, 1370932 + ... + 1419399.

It is an arithmetic number, because the mean of its divisors is an integer number (4838435688).

Almost surely, 2^67620881454 is an apocalyptic number.

67620881454 is an abundant number, since it is smaller than the sum of its proper divisors (87209060562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67620881454 is a wasteful number, since it uses less digits than its factorization.

67620881454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790920.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 67620881454 in words is "sixty-seven billion, six hundred twenty million, eight hundred eighty-one thousand, four hundred fifty-four".