68878124041550 has 24 divisors (see below), whose sum is σ = 128162265225456. Its totient is φ = 27540721765440.

The previous prime is 68878124041537. The next prime is 68878124041583. The reversal of 68878124041550 is 5514042187886.

It is a happy number.

It is a super-2 number, since 2×68878124041550² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68878124041550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263064122 + ... + 263325821.

It is an arithmetic number, because the mean of its divisors is an integer number (5340094384394).

Almost surely, 2^{68878124041550} is an apocalyptic number.

68878124041550 is a deficient number, since it is larger than the sum of its proper divisors (59284141183906).

68878124041550 is a wasteful number, since it uses less digits than its factorization.

68878124041550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526392572 (or 526392567 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 59.

The spelling of 68878124041550 in words is "sixty-eight trillion, eight hundred seventy-eight billion, one hundred twenty-four million, forty-one thousand, five hundred fifty".