20461214145 has 32 divisors (see below), whose sum is σ = 32866756992. Its totient is φ = 10869780992.

The previous prime is 20461214143. The next prime is 20461214227. The reversal of 20461214145 is 54141216402.

It is a cyclic number.

It is not a de Polignac number, because 20461214145 - 2¹ = 20461214143 is a prime.

It is a super-2 number, since 2×20461214145² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20461214143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7769749 + ... + 7772381.

It is an arithmetic number, because the mean of its divisors is an integer number (1027086156).

Almost surely, 2^20461214145 is an apocalyptic number.

It is an amenable number.

20461214145 is a deficient number, since it is larger than the sum of its proper divisors (12405542847).

20461214145 is a wasteful number, since it uses less digits than its factorization.

20461214145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481.

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 20461214145 in words is "twenty billion, four hundred sixty-one million, two hundred fourteen thousand, one hundred forty-five".