20202451655 has 8 divisors (see below), whose sum is σ = 24376881984. Its totient is φ = 16072668000.

The previous prime is 20202451639. The next prime is 20202451657. The reversal of 20202451655 is 55615420202.

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

It is not a de Polignac number, because 20202451655 - 2⁴ = 20202451639 is a prime.

It is a super-2 number, since 2×20202451655² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202451657) 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, 11160671 + ... + 11162480.

It is an arithmetic number, because the mean of its divisors is an integer number (3047110248).

Almost surely, 2^20202451655 is an apocalyptic number.

20202451655 is a deficient number, since it is larger than the sum of its proper divisors (4174430329).

20202451655 is a wasteful number, since it uses less digits than its factorization.

20202451655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22323337.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20202451655 its reverse (55615420202), we get a palindrome (75817871857).

The spelling of 20202451655 in words is "twenty billion, two hundred two million, four hundred fifty-one thousand, six hundred fifty-five".