68902417815 has 32 divisors (see below), whose sum is σ = 137446903296. Its totient is φ = 28634770560.

The previous prime is 68902417811. The next prime is 68902417841. The reversal of 68902417815 is 51871420986.

It is not a de Polignac number, because 68902417815 - 2² = 68902417811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68902417811) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 29826732 + ... + 29829041.

It is an arithmetic number, because the mean of its divisors is an integer number (4295215728).

Almost surely, 2^68902417815 is an apocalyptic number.

68902417815 is a deficient number, since it is larger than the sum of its proper divisors (68544485481).

68902417815 is a wasteful number, since it uses less digits than its factorization.

68902417815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59655799.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 68902417815 in words is "sixty-eight billion, nine hundred two million, four hundred seventeen thousand, eight hundred fifteen".