20152214655 has 16 divisors (see below), whose sum is σ = 32685237600. Its totient is φ = 10600616448.

The previous prime is 20152214653. The next prime is 20152214657. The reversal of 20152214655 is 55641225102.

It is an interprime number because it is at equal distance from previous prime (20152214653) and next prime (20152214657).

It is not a de Polignac number, because 20152214655 - 2¹ = 20152214653 is a prime.

It is a super-2 number, since 2×20152214655² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152214653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9200830 + ... + 9203019.

It is an arithmetic number, because the mean of its divisors is an integer number (2042827350).

Almost surely, 2^20152214655 is an apocalyptic number.

20152214655 is a deficient number, since it is larger than the sum of its proper divisors (12533022945).

20152214655 is a wasteful number, since it uses less digits than its factorization.

20152214655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18403930.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 20152214655 its reverse (55641225102), we get a palindrome (75793439757).

The spelling of 20152214655 in words is "twenty billion, one hundred fifty-two million, two hundred fourteen thousand, six hundred fifty-five".