67172553401980 has 24 divisors (see below), whose sum is σ = 151913313078912. Its totient is φ = 24802173563712.

The previous prime is 67172553401963. The next prime is 67172553401981. The reversal of 67172553401980 is 8910435527176.

It is a super-3 number, since 3×67172553401980³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67172553401981) 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, 129177987052 + ... + 129177987571.

It is an arithmetic number, because the mean of its divisors is an integer number (6329721378288).

It is a 1-persistent number, because it is pandigital, but 2⋅67172553401980 = 134345106803960 is not.

Almost surely, 2^{67172553401980} is an apocalyptic number.

It is an amenable number.

67172553401980 is an abundant number, since it is smaller than the sum of its proper divisors (84740759676932).

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

67172553401980 is a wasteful number, since it uses less digits than its factorization.

67172553401980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258355974645 (or 258355974643 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 67172553401980 in words is "sixty-seven trillion, one hundred seventy-two billion, five hundred fifty-three million, four hundred one thousand, nine hundred eighty".