1233420555515 has 16 divisors (see below), whose sum is σ = 1497101902848. Its totient is φ = 975450556416.

The previous prime is 1233420555487. The next prime is 1233420555533. The reversal of 1233420555515 is 5155550243321.

It is a cyclic number.

It is not a de Polignac number, because 1233420555515 - 2²⁰ = 1233419506939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2633534 + ... + 3066323.

It is an arithmetic number, because the mean of its divisors is an integer number (93568868928).

Almost surely, 2^{1233420555515} is an apocalyptic number.

1233420555515 is a deficient number, since it is larger than the sum of its proper divisors (263681347333).

1233420555515 is a wasteful number, since it uses less digits than its factorization.

1233420555515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700358.

The product of its (nonzero) digits is 450000, while the sum is 41.

Adding to 1233420555515 its reverse (5155550243321), we get a palindrome (6388970798836).

The spelling of 1233420555515 in words is "one trillion, two hundred thirty-three billion, four hundred twenty million, five hundred fifty-five thousand, five hundred fifteen".