68888429505 has 64 divisors (see below), whose sum is σ = 142052935680. Its totient is φ = 31021797312.

The previous prime is 68888429483. The next prime is 68888429509. The reversal of 68888429505 is 50592488886.

68888429505 is a `hidden beast` number, since 6 + 8 + 8 + 88 + 42 + 9 + 505 = 666.

It is not a de Polignac number, because 68888429505 - 2¹⁰ = 68888428481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68888429509) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480699 + ... + 607328.

It is an arithmetic number, because the mean of its divisors is an integer number (2219577120).

Almost surely, 2^68888429505 is an apocalyptic number.

It is an amenable number.

68888429505 is an abundant number, since it is smaller than the sum of its proper divisors (73164506175).

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

68888429505 is a wasteful number, since it uses less digits than its factorization.

68888429505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088115 (or 1088109 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 63.

The spelling of 68888429505 in words is "sixty-eight billion, eight hundred eighty-eight million, four hundred twenty-nine thousand, five hundred five".