68154787740 has 96 divisors (see below), whose sum is σ = 212142422016. Its totient is φ = 16235377920.

The previous prime is 68154787739. The next prime is 68154787741. The reversal of 68154787740 is 4778745186.

It is an interprime number because it is at equal distance from previous prime (68154787739) and next prime (68154787741).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68154787741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1385142 + ... + 1433501.

It is an arithmetic number, because the mean of its divisors is an integer number (2209816896).

Almost surely, 2^68154787740 is an apocalyptic number.

68154787740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68154787740 is an abundant number, since it is smaller than the sum of its proper divisors (143987634276).

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

68154787740 is a wasteful number, since it uses less digits than its factorization.

68154787740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818699 (or 2818697 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 68154787740 in words is "sixty-eight billion, one hundred fifty-four million, seven hundred eighty-seven thousand, seven hundred forty".