2119687503653 has 2 divisors, whose sum is σ = 2119687503654. Its totient is φ = 2119687503652.

The previous prime is 2119687503649. The next prime is 2119687503701. The reversal of 2119687503653 is 3563057869112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1169516799364 + 950170704289 = 1081442^2 + 974767^2 .

It is a cyclic number.

It is not a de Polignac number, because 2119687503653 - 2² = 2119687503649 is a prime.

It is a super-2 number, since 2×2119687503653² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2119687503253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059843751826 + 1059843751827.

It is an arithmetic number, because the mean of its divisors is an integer number (1059843751827).

Almost surely, 2^{2119687503653} is an apocalyptic number.

It is an amenable number.

2119687503653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119687503653 is an equidigital number, since it uses as much as digits as its factorization.

2119687503653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 2119687503653 in words is "two trillion, one hundred nineteen billion, six hundred eighty-seven million, five hundred three thousand, six hundred fifty-three".