2102615462540 has 48 divisors (see below), whose sum is σ = 4427380339200. Its totient is φ = 838784667072.

The previous prime is 2102615462539. The next prime is 2102615462569. The reversal of 2102615462540 is 452645162012.

It is a junction number, because it is equal to n+sod(n) for n = 2102615462494 and 2102615462503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11875181 + ... + 12050939.

It is an arithmetic number, because the mean of its divisors is an integer number (92237090400).

Almost surely, 2^{2102615462540} is an apocalyptic number.

2102615462540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102615462540 is an abundant number, since it is smaller than the sum of its proper divisors (2324764876660).

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

2102615462540 is a wasteful number, since it uses less digits than its factorization.

2102615462540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177374 (or 177372 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 2102615462540 in words is "two trillion, one hundred two billion, six hundred fifteen million, four hundred sixty-two thousand, five hundred forty".