172690375680 has 704 divisors, whose sum is σ = 645188198400. Its totient is φ = 43745771520.

The previous prime is 172690375673. The next prime is 172690375691. The reversal of 172690375680 is 86573096271.

172690375680 is a `hidden beast` number, since 1 + 7 + 269 + 0 + 375 + 6 + 8 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 252840619 + ... + 252841301.

Almost surely, 2^172690375680 is an apocalyptic number.

172690375680 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 172690375680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322594099200).

172690375680 is an abundant number, since it is smaller than the sum of its proper divisors (472497822720).

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

172690375680 is a wasteful number, since it uses less digits than its factorization.

172690375680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 172690375680 in words is "one hundred seventy-two billion, six hundred ninety million, three hundred seventy-five thousand, six hundred eighty".