19960076538 has 80 divisors (see below), whose sum is σ = 46108085760. Its totient is φ = 6450767424.

The previous prime is 19960076519. The next prime is 19960076551. The reversal of 19960076538 is 83567006991.

19960076538 is a `hidden beast` number, since 19 + 96 + 0 + 0 + 7 + 6 + 538 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 683431 + ... + 712037.

It is an arithmetic number, because the mean of its divisors is an integer number (576351072).

Almost surely, 2^19960076538 is an apocalyptic number.

19960076538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19960076538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23054042880).

19960076538 is an abundant number, since it is smaller than the sum of its proper divisors (26148009222).

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

19960076538 is a wasteful number, since it uses less digits than its factorization.

19960076538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28753 (or 28744 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 19960076538 in words is "nineteen billion, nine hundred sixty million, seventy-six thousand, five hundred thirty-eight".