20702623506 has 8 divisors (see below), whose sum is σ = 41405247024. Its totient is φ = 6900874500.

The previous prime is 20702623481. The next prime is 20702623507. The reversal of 20702623506 is 60532620702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20702623506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20702623507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1725218620 + ... + 1725218631.

It is an arithmetic number, because the mean of its divisors is an integer number (5175655878).

Almost surely, 2^20702623506 is an apocalyptic number.

20702623506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20702623506 is a wasteful number, since it uses less digits than its factorization.

20702623506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450437256.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 20702623506 in words is "twenty billion, seven hundred two million, six hundred twenty-three thousand, five hundred six".