2100309276505 has 48 divisors (see below), whose sum is σ = 2855229189120. Its totient is φ = 1481279944320.

The previous prime is 2100309276493. The next prime is 2100309276511. The reversal of 2100309276505 is 5056729030012.

It is not a de Polignac number, because 2100309276505 - 2¹³ = 2100309268313 is a prime.

It is a super-2 number, since 2×2100309276505² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2760592 + ... + 3438238.

It is an arithmetic number, because the mean of its divisors is an integer number (59483941440).

Almost surely, 2^{2100309276505} is an apocalyptic number.

It is an amenable number.

2100309276505 is a deficient number, since it is larger than the sum of its proper divisors (754919912615).

2100309276505 is a wasteful number, since it uses less digits than its factorization.

2100309276505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677830 (or 677819 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 2100309276505 in words is "two trillion, one hundred billion, three hundred nine million, two hundred seventy-six thousand, five hundred five".