99997828180532 has 24 divisors (see below), whose sum is σ = 175049479558464. Its totient is φ = 49983692213952.

The previous prime is 99997828180511. The next prime is 99997828180561. The reversal of 99997828180532 is 23508182879999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434853008 + ... + 435082904.

It is an arithmetic number, because the mean of its divisors is an integer number (7293728314936).

Almost surely, 2^{99997828180532} is an apocalyptic number.

It is an amenable number.

99997828180532 is a deficient number, since it is larger than the sum of its proper divisors (75051651377932).

99997828180532 is a wasteful number, since it uses less digits than its factorization.

99997828180532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262535 (or 262533 counting only the distinct ones).

The product of its (nonzero) digits is 1410877440, while the sum is 80.

The spelling of 99997828180532 in words is "ninety-nine trillion, nine hundred ninety-seven billion, eight hundred twenty-eight million, one hundred eighty thousand, five hundred thirty-two".