19624545240 has 32 divisors (see below), whose sum is σ = 58873636080. Its totient is φ = 5233212032.

The previous prime is 19624545223. The next prime is 19624545271. The reversal of 19624545240 is 4254542691.

It is a junction number, because it is equal to n+sod(n) for n = 19624545192 and 19624545201.

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, 81768819 + ... + 81769058.

Almost surely, 2^19624545240 is an apocalyptic number.

19624545240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19624545240 is an abundant number, since it is smaller than the sum of its proper divisors (39249090840).

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

19624545240 is a wasteful number, since it uses less digits than its factorization.

19624545240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163537891 (or 163537887 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 19624545240 in words is "nineteen billion, six hundred twenty-four million, five hundred forty-five thousand, two hundred forty".