145621435203 has 32 divisors (see below), whose sum is σ = 216656294400. Its totient is φ = 96667322400.

The previous prime is 145621435187. The next prime is 145621435217. The reversal of 145621435203 is 302534126541.

145621435203 is a `hidden beast` number, since 1 + 4 + 5 + 621 + 4 + 3 + 5 + 20 + 3 = 666.

It is not a de Polignac number, because 145621435203 - 2⁴ = 145621435187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145621430203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7488433 + ... + 7507853.

It is an arithmetic number, because the mean of its divisors is an integer number (6770509200).

Almost surely, 2^145621435203 is an apocalyptic number.

145621435203 is a deficient number, since it is larger than the sum of its proper divisors (71034859197).

145621435203 is a wasteful number, since it uses less digits than its factorization.

145621435203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20600 (or 20594 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 145621435203 in words is "one hundred forty-five billion, six hundred twenty-one million, four hundred thirty-five thousand, two hundred three".