20152028007478 has 8 divisors (see below), whose sum is σ = 30248370221472. Its totient is φ = 10069237933656.

The previous prime is 20152028007439. The next prime is 20152028007493. The reversal of 20152028007478 is 87470082025102.

It is a happy number.

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

It is a super-2 number, since 2×20152028007478² (a number of 27 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388031325 + ... + 3388037272.

It is an arithmetic number, because the mean of its divisors is an integer number (3781046277684).

Almost surely, 2^{20152028007478} is an apocalyptic number.

20152028007478 is a deficient number, since it is larger than the sum of its proper divisors (10096342213994).

20152028007478 is a wasteful number, since it uses less digits than its factorization.

20152028007478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776070086.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 20152028007478 in words is "twenty trillion, one hundred fifty-two billion, twenty-eight million, seven thousand, four hundred seventy-eight".