20153211051 has 8 divisors (see below), whose sum is σ = 28451592144. Its totient is φ = 12645152000.

The previous prime is 20153211047. The next prime is 20153211083. The reversal of 20153211051 is 15011235102.

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

It is a cyclic number.

It is not a de Polignac number, because 20153211051 - 2² = 20153211047 is a prime.

It is a super-2 number, since 2×20153211051² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20153211031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 197580450 + ... + 197580551.

It is an arithmetic number, because the mean of its divisors is an integer number (3556449018).

Almost surely, 2^20153211051 is an apocalyptic number.

20153211051 is a deficient number, since it is larger than the sum of its proper divisors (8298381093).

20153211051 is a wasteful number, since it uses less digits than its factorization.

20153211051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395161021.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 20153211051 its reverse (15011235102), we get a palindrome (35164446153).

The spelling of 20153211051 in words is "twenty billion, one hundred fifty-three million, two hundred eleven thousand, fifty-one".