99661629480 has 256 divisors, whose sum is σ = 362520576000. Its totient is φ = 21410500608.

The previous prime is 99661629479. The next prime is 99661629527. The reversal of 99661629480 is 8492616699.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 2002336 + ... + 2051504.

It is an arithmetic number, because the mean of its divisors is an integer number (1416096000).

Almost surely, 2^99661629480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99661629480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181260288000).

99661629480 is an abundant number, since it is smaller than the sum of its proper divisors (262858946520).

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

99661629480 is a wasteful number, since it uses less digits than its factorization.

99661629480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49336 (or 49332 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 99661629480 in words is "ninety-nine billion, six hundred sixty-one million, six hundred twenty-nine thousand, four hundred eighty".