20734666643702 has 16 divisors (see below), whose sum is σ = 34407334151424. Its totient is φ = 9292104129000.

The previous prime is 20734666643693. The next prime is 20734666643711.

20734666643702 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (20734666643693) and next prime (20734666643711).

It is a super-2 number, since 2×20734666643702² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6637215674 + ... + 6637218797.

It is an arithmetic number, because the mean of its divisors is an integer number (2150458384464).

Almost surely, 2^{20734666643702} is an apocalyptic number.

20734666643702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20734666643702 is a deficient number, since it is larger than the sum of its proper divisors (13672667507722).

20734666643702 is a wasteful number, since it uses less digits than its factorization.

20734666643702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13274434555.

The product of its (nonzero) digits is 36578304, while the sum is 56.

The spelling of 20734666643702 in words is "twenty trillion, seven hundred thirty-four billion, six hundred sixty-six million, six hundred forty-three thousand, seven hundred two".