99911562240 has 704 divisors, whose sum is σ = 395262664704. Its totient is φ = 21018181632.

The previous prime is 99911562239. The next prime is 99911562281. The reversal of 99911562240 is 4226511999.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 99911562240.

It is a congruent number.

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, 85907899 + ... + 85909061.

Almost surely, 2^99911562240 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 99911562240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197631332352).

99911562240 is an abundant number, since it is smaller than the sum of its proper divisors (295351102464).

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

99911562240 is a wasteful number, since it uses less digits than its factorization.

99911562240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 99911562240 in words is "ninety-nine billion, nine hundred eleven million, five hundred sixty-two thousand, two hundred forty".