145121554100 has 36 divisors (see below), whose sum is σ = 322594605228. Its totient is φ = 56632800000.

The previous prime is 145121554099. The next prime is 145121554103. The reversal of 145121554100 is 1455121541.

It can be written as a sum of positive squares in 6 ways, for example, as 268238884 + 144853315216 = 16378^2 + 380596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145121554103) 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, 17693651 + ... + 17701850.

Almost surely, 2^145121554100 is an apocalyptic number.

145121554100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145121554100 is an abundant number, since it is smaller than the sum of its proper divisors (177473051128).

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

145121554100 is a wasteful number, since it uses less digits than its factorization.

145121554100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35395556 (or 35395549 counting only the distinct ones).

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

Adding to 145121554100 its reverse (1455121541), we get a palindrome (146576675641).

The spelling of 145121554100 in words is "one hundred forty-five billion, one hundred twenty-one million, five hundred fifty-four thousand, one hundred".