20352477402242 has 4 divisors (see below), whose sum is σ = 30528716103366. Its totient is φ = 10176238701120.

The previous prime is 20352477402233. The next prime is 20352477402329. The reversal of 20352477402242 is 24220477425302.

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

It can be written as a sum of positive squares in only one way, i.e., 16555548460201 + 3796928942041 = 4068851^2 + 1948571^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20352477402193 and 20352477402202.

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 as a sum of consecutive naturals, namely, 5088119350559 + ... + 5088119350562.

Almost surely, 2^{20352477402242} is an apocalyptic number.

20352477402242 is a deficient number, since it is larger than the sum of its proper divisors (10176238701124).

20352477402242 is a wasteful number, since it uses less digits than its factorization.

20352477402242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176238701123.

The product of its (nonzero) digits is 1505280, while the sum is 44.

The spelling of 20352477402242 in words is "twenty trillion, three hundred fifty-two billion, four hundred seventy-seven million, four hundred two thousand, two hundred forty-two".