20690548295039 has 4 divisors (see below), whose sum is σ = 23646340908624. Its totient is φ = 17734755681456.

The previous prime is 20690548295029. The next prime is 20690548295041. The reversal of 20690548295039 is 93059284509602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20690548295039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20690548295029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477896306782 + ... + 1477896306795.

It is an arithmetic number, because the mean of its divisors is an integer number (5911585227156).

Almost surely, 2^{20690548295039} is an apocalyptic number.

20690548295039 is a deficient number, since it is larger than the sum of its proper divisors (2955792613585).

20690548295039 is an equidigital number, since it uses as much as digits as its factorization.

20690548295039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955792613584.

The product of its (nonzero) digits is 41990400, while the sum is 62.

The spelling of 20690548295039 in words is "twenty trillion, six hundred ninety billion, five hundred forty-eight million, two hundred ninety-five thousand, thirty-nine".