19957552950336 has 112 divisors (see below), whose sum is σ = 54516152291328. Its totient is φ = 6436924992000.

The previous prime is 19957552950241. The next prime is 19957552950341. The reversal of 19957552950336 is 63305925575991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38735631 + ... + 39247473.

It is an arithmetic number, because the mean of its divisors is an integer number (486751359744).

Almost surely, 2^{19957552950336} is an apocalyptic number.

19957552950336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19957552950336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27258076145664).

19957552950336 is an abundant number, since it is smaller than the sum of its proper divisors (34558599340992).

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

19957552950336 is a wasteful number, since it uses less digits than its factorization.

19957552950336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518440 (or 518430 counting only the distinct ones).

The product of its (nonzero) digits is 344452500, while the sum is 69.

The spelling of 19957552950336 in words is "nineteen trillion, nine hundred fifty-seven billion, five hundred fifty-two million, nine hundred fifty thousand, three hundred thirty-six".