88145005440 has 128 divisors (see below), whose sum is σ = 297489503520. Its totient is φ = 22122659840.

The previous prime is 88145005427. The next prime is 88145005441. The reversal of 88145005440 is 4450054188.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88145005441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317621 + ... + 1382900.

Almost surely, 2^88145005440 is an apocalyptic number.

88145005440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88145005440 is an abundant number, since it is smaller than the sum of its proper divisors (209344498080).

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

88145005440 is a wasteful number, since it uses less digits than its factorization.

88145005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700560 (or 2700548 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

The spelling of 88145005440 in words is "eighty-eight billion, one hundred forty-five million, five thousand, four hundred forty".