20242336154640 has 40 divisors (see below), whose sum is σ = 62751242080128. Its totient is φ = 5397956307840.

The previous prime is 20242336154611. The next prime is 20242336154653. The reversal of 20242336154640 is 4645163324202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 20242336154592 and 20242336154601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42171533416 + ... + 42171533895.

Almost surely, 2^{20242336154640} is an apocalyptic number.

20242336154640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20242336154640 is an abundant number, since it is smaller than the sum of its proper divisors (42508905925488).

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

20242336154640 is a wasteful number, since it uses less digits than its factorization.

20242336154640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84343067327 (or 84343067321 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 20242336154640 its reverse (4645163324202), we get a palindrome (24887499478842).

The spelling of 20242336154640 in words is "twenty trillion, two hundred forty-two billion, three hundred thirty-six million, one hundred fifty-four thousand, six hundred forty".