19601229312 has 480 divisors, whose sum is σ = 71092771200. Its totient is φ = 5302112256.

The previous prime is 19601229299. The next prime is 19601229337. The reversal of 19601229312 is 21392210691.

19601229312 is a `hidden beast` number, since 19 + 601 + 2 + 2 + 9 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12869383 + ... + 12870905.

It is an arithmetic number, because the mean of its divisors is an integer number (148109940).

Almost surely, 2^19601229312 is an apocalyptic number.

19601229312 is a gapful number since it is divisible by the number (12) 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 19601229312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35546385600).

19601229312 is an abundant number, since it is smaller than the sum of its proper divisors (51491541888).

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

19601229312 is a wasteful number, since it uses less digits than its factorization.

19601229312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 19601229312 in words is "nineteen billion, six hundred one million, two hundred twenty-nine thousand, three hundred twelve".