2121630246519 has 64 divisors (see below), whose sum is σ = 3432826552320. Its totient is φ = 1137817198080.

The previous prime is 2121630246509. The next prime is 2121630246539. The reversal of 2121630246519 is 9156420361212.

It is not a de Polignac number, because 2121630246519 - 2⁵ = 2121630246487 is a prime.

It is a super-2 number, since 2×2121630246519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121630246509) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 483174814 + ... + 483179204.

It is an arithmetic number, because the mean of its divisors is an integer number (53637914880).

Almost surely, 2^{2121630246519} is an apocalyptic number.

2121630246519 is a deficient number, since it is larger than the sum of its proper divisors (1311196305801).

2121630246519 is a wasteful number, since it uses less digits than its factorization.

2121630246519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 2121630246519 in words is "two trillion, one hundred twenty-one billion, six hundred thirty million, two hundred forty-six thousand, five hundred nineteen".