20450516240634 has 16 divisors (see below), whose sum is σ = 41771267215488. Its totient is φ = 6671799624512.

The previous prime is 20450516240633. The next prime is 20450516240669. The reversal of 20450516240634 is 43604261505402.

It is a happy number.

It is a super-2 number, since 2×20450516240634² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20450516240633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36259780287 + ... + 36259780850.

It is an arithmetic number, because the mean of its divisors is an integer number (2610704200968).

Almost surely, 2^{20450516240634} is an apocalyptic number.

20450516240634 is an abundant number, since it is smaller than the sum of its proper divisors (21320750974854).

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

20450516240634 is a wasteful number, since it uses less digits than its factorization.

20450516240634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72519561189.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 20450516240634 in words is "twenty trillion, four hundred fifty billion, five hundred sixteen million, two hundred forty thousand, six hundred thirty-four".