20078194652 has 12 divisors (see below), whose sum is σ = 35712854856. Its totient is φ = 9874521840.

The previous prime is 20078194639. The next prime is 20078194663. The reversal of 20078194652 is 25649187002.

It is a happy number.

It is a super-2 number, since 2×20078194652² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 41143598 + ... + 41144085.

It is an arithmetic number, because the mean of its divisors is an integer number (2976071238).

Almost surely, 2^20078194652 is an apocalyptic number.

It is an amenable number.

20078194652 is a deficient number, since it is larger than the sum of its proper divisors (15634660204).

20078194652 is a wasteful number, since it uses less digits than its factorization.

20078194652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82287748 (or 82287746 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 20078194652 in words is "twenty billion, seventy-eight million, one hundred ninety-four thousand, six hundred fifty-two".