19520145020 has 24 divisors (see below), whose sum is σ = 41569663968. Its totient is φ = 7698084800.

The previous prime is 19520144989. The next prime is 19520145037. The reversal of 19520145020 is 2054102591.

It is a super-4 number, since 4×19520145020⁴ (a number of 42 digits) contains 4444 as substring.

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, 6871871 + ... + 6874710.

It is an arithmetic number, because the mean of its divisors is an integer number (1732069332).

Almost surely, 2^19520145020 is an apocalyptic number.

19520145020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19520145020 is an abundant number, since it is smaller than the sum of its proper divisors (22049518948).

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

19520145020 is a wasteful number, since it uses less digits than its factorization.

19520145020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13746661 (or 13746659 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 19520145020 in words is "nineteen billion, five hundred twenty million, one hundred forty-five thousand, twenty".