815006402434461 has 4 divisors (see below), whose sum is σ = 1086675203245952. Its totient is φ = 543337601622972.

The previous prime is 815006402434363. The next prime is 815006402434493. The reversal of 815006402434461 is 164434204600518.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 815006402434461 - 2¹⁰ = 815006402433437 is a prime.

It is a super-3 number, since 3×815006402434461³ (a number of 46 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 815006402434461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815006402432461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135834400405741 + ... + 135834400405746.

It is an arithmetic number, because the mean of its divisors is an integer number (271668800811488).

Almost surely, 2^{815006402434461} is an apocalyptic number.

It is an amenable number.

815006402434461 is a deficient number, since it is larger than the sum of its proper divisors (271668800811491).

815006402434461 is a wasteful number, since it uses less digits than its factorization.

815006402434461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271668800811490.

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 815006402434461 in words is "eight hundred fifteen trillion, six billion, four hundred two million, four hundred thirty-four thousand, four hundred sixty-one".