20177753105 has 8 divisors (see below), whose sum is σ = 24214456872. Its totient is φ = 16141433728.

The previous prime is 20177753087. The next prime is 20177753143. The reversal of 20177753105 is 50135777102.

It can be written as a sum of positive squares in 4 ways, for example, as 356492161 + 19821260944 = 18881^2 + 140788^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20177753105 is a prime.

It is a Duffinian 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, 35867 + ... + 204063.

It is an arithmetic number, because the mean of its divisors is an integer number (3026807109).

Almost surely, 2^20177753105 is an apocalyptic number.

It is an amenable number.

20177753105 is a deficient number, since it is larger than the sum of its proper divisors (4036703767).

20177753105 is a wasteful number, since it uses less digits than its factorization.

20177753105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192195.

The product of its (nonzero) digits is 51450, while the sum is 38.

The spelling of 20177753105 in words is "twenty billion, one hundred seventy-seven million, seven hundred fifty-three thousand, one hundred five".