172637879040 has 1440 divisors, whose sum is σ = 735086499840. Its totient is φ = 38220595200.

The previous prime is 172637879023. The next prime is 172637879083. The reversal of 172637879040 is 40978736271.

It is a tau number, because it is divible by the number of its divisors (1440).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 671742592 + ... + 671742848.

It is an arithmetic number, because the mean of its divisors is an integer number (510476736).

Almost surely, 2^172637879040 is an apocalyptic number.

172637879040 is a gapful number since it is divisible by the number (10) 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 172637879040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367543249920).

172637879040 is an abundant number, since it is smaller than the sum of its proper divisors (562448620800).

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

172637879040 is a wasteful number, since it uses less digits than its factorization.

172637879040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 172637879040 in words is "one hundred seventy-two billion, six hundred thirty-seven million, eight hundred seventy-nine thousand, forty".