20152512512042 has 8 divisors (see below), whose sum is σ = 30421308696996. Its totient is φ = 10012076279712.

The previous prime is 20152512512023. The next prime is 20152512512057. The reversal of 20152512512042 is 24021521525102.

It can be written as a sum of positive squares in 2 ways, for example, as 20039132827081 + 113379684961 = 4476509^2 + 336719^2 .

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

It is a super-2 number, since 2×20152512512042² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32089987763 + ... + 32089988390.

Almost surely, 2^{20152512512042} is an apocalyptic number.

20152512512042 is a deficient number, since it is larger than the sum of its proper divisors (10268796184954).

20152512512042 is a wasteful number, since it uses less digits than its factorization.

20152512512042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64179976312.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 20152512512042 in words is "twenty trillion, one hundred fifty-two billion, five hundred twelve million, five hundred twelve thousand, forty-two".