20697655841492 has 24 divisors (see below), whose sum is σ = 41624015072640. Its totient is φ = 8821416062880.

The previous prime is 20697655841483. The next prime is 20697655841509. The reversal of 20697655841492 is 29414855679602.

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, 2041989392 + ... + 2041999527.

It is an arithmetic number, because the mean of its divisors is an integer number (1734333961360).

Almost surely, 2^{20697655841492} is an apocalyptic number.

It is an amenable number.

20697655841492 is an abundant number, since it is smaller than the sum of its proper divisors (20926359231148).

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

20697655841492 is a wasteful number, since it uses less digits than its factorization.

20697655841492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083989111 (or 4083989109 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 20697655841492 in words is "twenty trillion, six hundred ninety-seven billion, six hundred fifty-five million, eight hundred forty-one thousand, four hundred ninety-two".