99945677408 has 48 divisors (see below), whose sum is σ = 201009728304. Its totient is φ = 48903912960.

The previous prime is 99945677383. The next prime is 99945677423. The reversal of 99945677408 is 80477654999.

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, 254591 + ... + 514497.

It is an arithmetic number, because the mean of its divisors is an integer number (4187702673).

Almost surely, 2^99945677408 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 99945677408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100504864152).

99945677408 is an abundant number, since it is smaller than the sum of its proper divisors (101064050896).

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

99945677408 is a wasteful number, since it uses less digits than its factorization.

99945677408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260175 (or 260167 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 68.

The spelling of 99945677408 in words is "ninety-nine billion, nine hundred forty-five million, six hundred seventy-seven thousand, four hundred eight".