19750955616 has 144 divisors (see below), whose sum is σ = 64826824608. Its totient is φ = 5587200000.

The previous prime is 19750955611. The next prime is 19750955617. The reversal of 19750955616 is 61655905791.

19750955616 is a `hidden beast` number, since 1 + 9 + 75 + 0 + 9 + 5 + 561 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19750955611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155116 + ... + 252116.

It is an arithmetic number, because the mean of its divisors is an integer number (450186282).

Almost surely, 2^19750955616 is an apocalyptic number.

19750955616 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 19750955616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32413412304).

19750955616 is an abundant number, since it is smaller than the sum of its proper divisors (45075868992).

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

19750955616 is a wasteful number, since it uses less digits than its factorization.

19750955616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97125 (or 97114 counting only the distinct ones).

The product of its (nonzero) digits is 2551500, while the sum is 54.

It can be divided in two parts, 19 and 750955616, that added together give a triangular number (750955635 = T₃₈₇₅₄).

The spelling of 19750955616 in words is "nineteen billion, seven hundred fifty million, nine hundred fifty-five thousand, six hundred sixteen".