67139245980 has 120 divisors (see below), whose sum is σ = 211095994032. Its totient is φ = 17863193088.

The previous prime is 67139245969. The next prime is 67139246011. The reversal of 67139245980 is 8954293176.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 670884 + ... + 764436.

It is a 1-persistent number, because it is pandigital, but 2⋅67139245980 = 134278491960 is not.

Almost surely, 2^67139245980 is an apocalyptic number.

67139245980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67139245980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105547997016).

67139245980 is an abundant number, since it is smaller than the sum of its proper divisors (143956748052).

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

67139245980 is a wasteful number, since it uses less digits than its factorization.

67139245980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94017 (or 94006 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 67139245980 in words is "sixty-seven billion, one hundred thirty-nine million, two hundred forty-five thousand, nine hundred eighty".