10203621161544 has 80 divisors (see below), whose sum is σ = 28582460606700. Its totient is φ = 3400865077248.

The previous prime is 10203621161543. The next prime is 10203621161567. The reversal of 10203621161544 is 44516112630201.

10203621161544 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 3 + 621 + 16 + 15 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9681195777444 + 522425384100 = 3111462^2 + 722790^2 .

It is a super-2 number, since 2×10203621161544² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 10203621161499 and 10203621161508.

It is not an unprimeable number, because it can be changed into a prime (10203621161543) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5699224 + ... + 7272440.

Almost surely, 2^{10203621161544} is an apocalyptic number.

It is an amenable number.

10203621161544 is an abundant number, since it is smaller than the sum of its proper divisors (18378839445156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10203621161544 is a wasteful number, since it uses less digits than its factorization.

10203621161544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583244 (or 1583231 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 10203621161544 its reverse (44516112630201), we get a palindrome (54719733791745).

The spelling of 10203621161544 in words is "ten trillion, two hundred three billion, six hundred twenty-one million, one hundred sixty-one thousand, five hundred forty-four".