2135020154505 has 64 divisors (see below), whose sum is σ = 4019355648000. Its totient is φ = 947418785280.

The previous prime is 2135020154483. The next prime is 2135020154507. The reversal of 2135020154505 is 5054510205312.

It is not a de Polignac number, because 2135020154505 - 2¹⁹ = 2135019630217 is a prime.

It is a super-2 number, since 2×2135020154505² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2135020154507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 389385 + ... + 2102774.

It is an arithmetic number, because the mean of its divisors is an integer number (62802432000).

Almost surely, 2^{2135020154505} is an apocalyptic number.

It is an amenable number.

2135020154505 is a deficient number, since it is larger than the sum of its proper divisors (1884335493495).

2135020154505 is a wasteful number, since it uses less digits than its factorization.

2135020154505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492414.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 2135020154505 its reverse (5054510205312), we get a palindrome (7189530359817).

The spelling of 2135020154505 in words is "two trillion, one hundred thirty-five billion, twenty million, one hundred fifty-four thousand, five hundred five".