20141772778 has 8 divisors (see below), whose sum is σ = 30214395360. Its totient is φ = 10070307660.

The previous prime is 20141772733. The next prime is 20141772823. The reversal of 20141772778 is 87727714102.

It is an interprime number because it is at equal distance from previous prime (20141772733) and next prime (20141772823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244468 + ... + 316303.

It is an arithmetic number, because the mean of its divisors is an integer number (3776799420).

Almost surely, 2^20141772778 is an apocalyptic number.

20141772778 is a deficient number, since it is larger than the sum of its proper divisors (10072622582).

20141772778 is a wasteful number, since it uses less digits than its factorization.

20141772778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578732.

The product of its (nonzero) digits is 307328, while the sum is 46.

The spelling of 20141772778 in words is "twenty billion, one hundred forty-one million, seven hundred seventy-two thousand, seven hundred seventy-eight".