1019129514172 has 96 divisors (see below), whose sum is σ = 2252155175424. Its totient is φ = 391987814400.

The previous prime is 1019129514047. The next prime is 1019129514173. The reversal of 1019129514172 is 2714159219101.

1019129514172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019129514173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7721728 + ... + 7852600.

It is an arithmetic number, because the mean of its divisors is an integer number (23459949744).

Almost surely, 2^{1019129514172} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1019129514172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126077587712).

1019129514172 is an abundant number, since it is smaller than the sum of its proper divisors (1233025661252).

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

1019129514172 is a wasteful number, since it uses less digits than its factorization.

1019129514172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131219 (or 131217 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 43.

The spelling of 1019129514172 in words is "one trillion, nineteen billion, one hundred twenty-nine million, five hundred fourteen thousand, one hundred seventy-two".