2871972563820 has 96 divisors (see below), whose sum is σ = 8392148577792. Its totient is φ = 732474344448.

The previous prime is 2871972563771. The next prime is 2871972563869. The reversal of 2871972563820 is 283652791782.

It is an interprime number because it is at equal distance from previous prime (2871972563771) and next prime (2871972563869).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11960259 + ... + 12198021.

It is an arithmetic number, because the mean of its divisors is an integer number (87418214352).

Almost surely, 2^{2871972563820} is an apocalyptic number.

2871972563820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2871972563820 is an abundant number, since it is smaller than the sum of its proper divisors (5520176013972).

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

2871972563820 is a wasteful number, since it uses less digits than its factorization.

2871972563820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246551 (or 246549 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 2871972563820 in words is "two trillion, eight hundred seventy-one billion, nine hundred seventy-two million, five hundred sixty-three thousand, eight hundred twenty".