20435063766 has 16 divisors (see below), whose sum is σ = 44013983664. Its totient is φ = 6287711904.

The previous prime is 20435063681. The next prime is 20435063791. The reversal of 20435063766 is 66736053402.

It is a super-2 number, since 2×20435063766² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130993921 + ... + 130994076.

It is an arithmetic number, because the mean of its divisors is an integer number (2750873979).

Almost surely, 2^20435063766 is an apocalyptic number.

20435063766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20435063766 is an abundant number, since it is smaller than the sum of its proper divisors (23578919898).

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

20435063766 is a wasteful number, since it uses less digits than its factorization.

20435063766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261988015.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 20435063766 in words is "twenty billion, four hundred thirty-five million, sixty-three thousand, seven hundred sixty-six".