20361779234628 has 48 divisors (see below), whose sum is σ = 54175231635840. Its totient is φ = 5896623849984.

The previous prime is 20361779234609. The next prime is 20361779234677. The reversal of 20361779234628 is 82643297716302.

It is a happy number.

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 in 15 ways as a sum of consecutive naturals, for example, 3838945168 + ... + 3838950471.

It is an arithmetic number, because the mean of its divisors is an integer number (1128650659080).

Almost surely, 2^{20361779234628} is an apocalyptic number.

It is an amenable number.

20361779234628 is an abundant number, since it is smaller than the sum of its proper divisors (33813452401212).

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

20361779234628 is a wasteful number, since it uses less digits than its factorization.

20361779234628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677895676 (or 7677895674 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 20361779234628 in words is "twenty trillion, three hundred sixty-one billion, seven hundred seventy-nine million, two hundred thirty-four thousand, six hundred twenty-eight".