68215487420 has 12 divisors (see below), whose sum is σ = 143252523624. Its totient is φ = 27286194960.

The previous prime is 68215487399. The next prime is 68215487441. The reversal of 68215487420 is 2478451286.

It is an interprime number because it is at equal distance from previous prime (68215487399) and next prime (68215487441).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705387166 + ... + 1705387205.

It is an arithmetic number, because the mean of its divisors is an integer number (11937710302).

Almost surely, 2^68215487420 is an apocalyptic number.

It is an amenable number.

68215487420 is an abundant number, since it is smaller than the sum of its proper divisors (75037036204).

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

68215487420 is a wasteful number, since it uses less digits than its factorization.

68215487420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410774380 (or 3410774378 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 68215487420 in words is "sixty-eight billion, two hundred fifteen million, four hundred eighty-seven thousand, four hundred twenty".