88039405440 has 672 divisors, whose sum is σ = 367174681560. Its totient is φ = 20118067200.

The previous prime is 88039405409. The next prime is 88039405453. The reversal of 88039405440 is 4450493088.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 22859515 + ... + 22863365.

Almost surely, 2^88039405440 is an apocalyptic number.

88039405440 is a gapful number since it is divisible by the number (80) 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 88039405440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183587340780).

88039405440 is an abundant number, since it is smaller than the sum of its proper divisors (279135276120).

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

88039405440 is an equidigital number, since it uses as much as digits as its factorization.

88039405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902 (or 3868 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 88039405440 in words is "eighty-eight billion, thirty-nine million, four hundred five thousand, four hundred forty".