68888213540 has 24 divisors (see below), whose sum is σ = 144674077632. Its totient is φ = 27553603680.

The previous prime is 68888213539. The next prime is 68888213579. The reversal of 68888213540 is 4531288886.

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, 262067 + ... + 454373.

It is an arithmetic number, because the mean of its divisors is an integer number (6028086568).

Almost surely, 2^68888213540 is an apocalyptic number.

It is an amenable number.

68888213540 is an abundant number, since it is smaller than the sum of its proper divisors (75785864092).

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

68888213540 is a wasteful number, since it uses less digits than its factorization.

68888213540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210227 (or 210225 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 68888213540 in words is "sixty-eight billion, eight hundred eighty-eight million, two hundred thirteen thousand, five hundred forty".