68545085660 has 48 divisors (see below), whose sum is σ = 146153458080. Its totient is φ = 26997653760.

The previous prime is 68545085657. The next prime is 68545085663. The reversal of 68545085660 is 6658054586.

It is an interprime number because it is at equal distance from previous prime (68545085657) and next prime (68545085663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68545085663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3728090 + ... + 3746430.

It is an arithmetic number, because the mean of its divisors is an integer number (3044863710).

Almost surely, 2^68545085660 is an apocalyptic number.

It is an amenable number.

68545085660 is an abundant number, since it is smaller than the sum of its proper divisors (77608372420).

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

68545085660 is a wasteful number, since it uses less digits than its factorization.

68545085660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21206 (or 21204 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 53.

The spelling of 68545085660 in words is "sixty-eight billion, five hundred forty-five million, eighty-five thousand, six hundred sixty".