172529387380 has 96 divisors (see below), whose sum is σ = 436431421440. Its totient is φ = 56035499520.

The previous prime is 172529387321. The next prime is 172529387383. The reversal of 172529387380 is 83783925271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172529387383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185716 + ... + 616075.

It is an arithmetic number, because the mean of its divisors is an integer number (4546160640).

Almost surely, 2^172529387380 is an apocalyptic number.

172529387380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172529387380 is an abundant number, since it is smaller than the sum of its proper divisors (263902034060).

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

172529387380 is a wasteful number, since it uses less digits than its factorization.

172529387380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801889 (or 801887 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 172529387380 in words is "one hundred seventy-two billion, five hundred twenty-nine million, three hundred eighty-seven thousand, three hundred eighty".