19620156960 has 960 divisors, whose sum is σ = 79693891200. Its totient is φ = 4514807808.

The previous prime is 19620156901. The next prime is 19620156989. The reversal of 19620156960 is 6965102691.

It is a happy number.

19620156960 is a `hidden beast` number, since 1 + 9 + 6 + 20 + 1 + 569 + 60 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 180001386 + ... + 180001494.

It is an arithmetic number, because the mean of its divisors is an integer number (83014470).

Almost surely, 2^19620156960 is an apocalyptic number.

19620156960 is a gapful number since it is divisible by the number (10) 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 19620156960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39846945600).

19620156960 is an abundant number, since it is smaller than the sum of its proper divisors (60073734240).

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

19620156960 is a wasteful number, since it uses less digits than its factorization.

19620156960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 19620156960 in words is "nineteen billion, six hundred twenty million, one hundred fifty-six thousand, nine hundred sixty".