145496398640 has 40 divisors (see below), whose sum is σ = 340304781600. Its totient is φ = 57850059776.

The previous prime is 145496398631. The next prime is 145496398673. The reversal of 145496398640 is 46893694541.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 145496398640.

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, 5431865 + ... + 5458584.

It is an arithmetic number, because the mean of its divisors is an integer number (8507619540).

Almost surely, 2^145496398640 is an apocalyptic number.

145496398640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145496398640 is an abundant number, since it is smaller than the sum of its proper divisors (194808382960).

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

145496398640 is a wasteful number, since it uses less digits than its factorization.

145496398640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890629 (or 10890623 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 145496398640 in words is "one hundred forty-five billion, four hundred ninety-six million, three hundred ninety-eight thousand, six hundred forty".