135642620203 has 12 divisors (see below), whose sum is σ = 144108734920. Its totient is φ = 127647885312.

The previous prime is 135642620189. The next prime is 135642620249. The reversal of 135642620203 is 302026246531.

It is not a de Polignac number, because 135642620203 - 2¹³ = 135642612011 is a prime.

It is a super-3 number, since 3×135642620203³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135642623203) 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, 2790475 + ... + 2838667.

Almost surely, 2^135642620203 is an apocalyptic number.

135642620203 is a deficient number, since it is larger than the sum of its proper divisors (8466114717).

135642620203 is an equidigital number, since it uses as much as digits as its factorization.

135642620203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57966 (or 57949 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 135642620203 its reverse (302026246531), we get a palindrome (437668866734).

The spelling of 135642620203 in words is "one hundred thirty-five billion, six hundred forty-two million, six hundred twenty thousand, two hundred three".