2102011687902 has 64 divisors (see below), whose sum is σ = 4960471154688. Its totient is φ = 581097564000.

The previous prime is 2102011687901. The next prime is 2102011687913. The reversal of 2102011687902 is 2097861102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102011687901) 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, 7294377 + ... + 7577067.

It is an arithmetic number, because the mean of its divisors is an integer number (77507361792).

Almost surely, 2^{2102011687902} is an apocalyptic number.

2102011687902 is an abundant number, since it is smaller than the sum of its proper divisors (2858459466786).

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

2102011687902 is a wasteful number, since it uses less digits than its factorization.

2102011687902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288445.

The product of its (nonzero) digits is 24192, while the sum is 39.

Adding to 2102011687902 its reverse (2097861102012), we get a palindrome (4199872789914).

The spelling of 2102011687902 in words is "two trillion, one hundred two billion, eleven million, six hundred eighty-seven thousand, nine hundred two".