68474016672 has 48 divisors (see below), whose sum is σ = 180043520832. Its totient is φ = 22786675200.

The previous prime is 68474016649. The next prime is 68474016673. The reversal of 68474016672 is 27661047486.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68474016673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535708 + ... + 651099.

It is an arithmetic number, because the mean of its divisors is an integer number (3750906684).

Almost surely, 2^68474016672 is an apocalyptic number.

It is an amenable number.

68474016672 is an abundant number, since it is smaller than the sum of its proper divisors (111569504160).

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

68474016672 is a wasteful number, since it uses less digits than its factorization.

68474016672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187421 (or 1187413 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 68474016672 in words is "sixty-eight billion, four hundred seventy-four million, sixteen thousand, six hundred seventy-two".