68548998892465 has 16 divisors (see below), whose sum is σ = 101241598364928. Its totient is φ = 43389256441536.

The previous prime is 68548998892441. The next prime is 68548998892499. The reversal of 68548998892465 is 56429889984586.

It is a cyclic number.

It is not a de Polignac number, because 68548998892465 - 2⁵ = 68548998892433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (91).

It is a self number, because there is not a number n which added to its sum of digits gives 68548998892465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75328569757 + ... + 75328570666.

It is an arithmetic number, because the mean of its divisors is an integer number (6327599897808).

Almost surely, 2^{68548998892465} is an apocalyptic number.

68548998892465 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68548998892465 is a deficient number, since it is larger than the sum of its proper divisors (32692599472463).

68548998892465 is a wasteful number, since it uses less digits than its factorization.

68548998892465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150657140448.

The product of its digits is 85996339200, while the sum is 91.

The spelling of 68548998892465 in words is "sixty-eight trillion, five hundred forty-eight billion, nine hundred ninety-eight million, eight hundred ninety-two thousand, four hundred sixty-five".