8100155450 has 12 divisors (see below), whose sum is σ = 15066289230. Its totient is φ = 3240062160.

The previous prime is 8100155389. The next prime is 8100155491. The reversal of 8100155450 is 545510018.

It can be written as a sum of positive squares in 3 ways, for example, as 4686908521 + 3413246929 = 68461^2 + 58423^2 .

It is a super-2 number, since 2×8100155450² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81001505 + ... + 81001604.

Almost surely, 2^8100155450 is an apocalyptic number.

8100155450 is a deficient number, since it is larger than the sum of its proper divisors (6966133780).

8100155450 is a wasteful number, since it uses less digits than its factorization.

8100155450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162003121 (or 162003116 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 8100155450 is about 90000.8636069677. The cubic root of 8100155450 is about 2008.3116974917.

Adding to 8100155450 its reverse (545510018), we get a palindrome (8645665468).

The spelling of 8100155450 in words is "eight billion, one hundred million, one hundred fifty-five thousand, four hundred fifty".