20311200755 has 16 divisors (see below), whose sum is σ = 26929226304. Its totient is φ = 14628218880.

The previous prime is 20311200751. The next prime is 20311200761. The reversal of 20311200755 is 55700211302.

It is not a de Polignac number, because 20311200755 - 2² = 20311200751 is a prime.

It is a super-2 number, since 2×20311200755² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311200751) 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 15 ways as a sum of consecutive naturals, for example, 5192726 + ... + 5196635.

It is an arithmetic number, because the mean of its divisors is an integer number (1683076644).

Almost surely, 2^20311200755 is an apocalyptic number.

20311200755 is a deficient number, since it is larger than the sum of its proper divisors (6618025549).

20311200755 is a wasteful number, since it uses less digits than its factorization.

20311200755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10389406.

The product of its (nonzero) digits is 2100, while the sum is 26.

The spelling of 20311200755 in words is "twenty billion, three hundred eleven million, two hundred thousand, seven hundred fifty-five".