2820156159840 has 48 divisors (see below), whose sum is σ = 8883491905008. Its totient is φ = 752041642496.

The previous prime is 2820156159833. The next prime is 2820156159841. The reversal of 2820156159840 is 489516510282.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820156159841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937662187 + ... + 2937663146.

It is an arithmetic number, because the mean of its divisors is an integer number (185072748021).

Almost surely, 2^{2820156159840} is an apocalyptic number.

2820156159840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2820156159840 is an abundant number, since it is smaller than the sum of its proper divisors (6063335745168).

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

2820156159840 is a wasteful number, since it uses less digits than its factorization.

2820156159840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5875325351 (or 5875325343 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 2820156159840 in words is "two trillion, eight hundred twenty billion, one hundred fifty-six million, one hundred fifty-nine thousand, eight hundred forty".