99980277432 has 256 divisors, whose sum is σ = 307257753600. Its totient is φ = 26490731520.

The previous prime is 99980277431. The next prime is 99980277451. The reversal of 99980277432 is 23477208999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99980277431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26454919 + ... + 26458697.

It is an arithmetic number, because the mean of its divisors is an integer number (1200225600).

Almost surely, 2^99980277432 is an apocalyptic number.

99980277432 is a gapful number since it is divisible by the number (92) 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 99980277432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153628876800).

99980277432 is an abundant number, since it is smaller than the sum of its proper divisors (207277476168).

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

99980277432 is a wasteful number, since it uses less digits than its factorization.

99980277432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026 (or 4022 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 99980277432 in words is "ninety-nine billion, nine hundred eighty million, two hundred seventy-seven thousand, four hundred thirty-two".