2153500220450 has 24 divisors (see below), whose sum is σ = 4005555988500. Its totient is φ = 861390286400.

The previous prime is 2153500220437. The next prime is 2153500220453. The reversal of 2153500220450 is 540220053512.

It can be written as a sum of positive squares in 6 ways, for example, as 814825766329 + 1338674454121 = 902677^2 + 1157011^2 .

It is not an unprimeable number, because it can be changed into a prime (2153500220453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5549780 + ... + 5925120.

Almost surely, 2^{2153500220450} is an apocalyptic number.

2153500220450 is a deficient number, since it is larger than the sum of its proper divisors (1852055768050).

2153500220450 is a wasteful number, since it uses less digits than its factorization.

2153500220450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490102 (or 490097 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 2153500220450 its reverse (540220053512), we get a palindrome (2693720273962).

The spelling of 2153500220450 in words is "two trillion, one hundred fifty-three billion, five hundred million, two hundred twenty thousand, four hundred fifty".