68201954520 has 128 divisors (see below), whose sum is σ = 236795443200. Its totient is φ = 15391673856.

The previous prime is 68201954449. The next prime is 68201954521. The reversal of 68201954520 is 2545910286.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68201954521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447519 + ... + 580238.

It is an arithmetic number, because the mean of its divisors is an integer number (1849964400).

Almost surely, 2^68201954520 is an apocalyptic number.

68201954520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68201954520 is an abundant number, since it is smaller than the sum of its proper divisors (168593488680).

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

68201954520 is a wasteful number, since it uses less digits than its factorization.

68201954520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027857 (or 1027853 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 68201954520 in words is "sixty-eight billion, two hundred one million, nine hundred fifty-four thousand, five hundred twenty".