1047865171000 has 128 divisors (see below), whose sum is σ = 2463859944000. Its totient is φ = 417124492800.

The previous prime is 1047865170991. The next prime is 1047865171009. The reversal of 1047865171000 is 1715687401.

It is an interprime number because it is at equal distance from previous prime (1047865170991) and next prime (1047865171009).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047865171009) 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, 196484334 + ... + 196489666.

Almost surely, 2^{1047865171000} is an apocalyptic number.

1047865171000 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 1047865171000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231929972000).

1047865171000 is an abundant number, since it is smaller than the sum of its proper divisors (1415994773000).

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

1047865171000 is a wasteful number, since it uses less digits than its factorization.

1047865171000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266 (or 6252 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 1047865171000 in words is "one trillion, forty-seven billion, eight hundred sixty-five million, one hundred seventy-one thousand".