2897121052782 has 48 divisors (see below), whose sum is σ = 7083869672880. Its totient is φ = 847642521600.

The previous prime is 2897121052781. The next prime is 2897121052783. The reversal of 2897121052782 is 2872501217982.

2897121052782 is a `hidden beast` number, since 2 + 8 + 97 + 1 + 21 + 0 + 527 + 8 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2897121052781) and next prime (2897121052783).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897121052781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252268819 + ... + 252280302.

It is an arithmetic number, because the mean of its divisors is an integer number (147580618185).

Almost surely, 2^{2897121052782} is an apocalyptic number.

2897121052782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2897121052782 is an abundant number, since it is smaller than the sum of its proper divisors (4186748620098).

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

2897121052782 is a wasteful number, since it uses less digits than its factorization.

2897121052782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504549169 (or 504549166 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 2897121052782 in words is "two trillion, eight hundred ninety-seven billion, one hundred twenty-one million, fifty-two thousand, seven hundred eighty-two".