501046434157 has 4 divisors (see below), whose sum is σ = 501313946140. Its totient is φ = 500778922176.

The previous prime is 501046434139. The next prime is 501046434167. The reversal of 501046434157 is 751434640105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751434640105 = 5 ⋅150286928021.

It can be written as a sum of positive squares in 2 ways, for example, as 223028563081 + 278017871076 = 472259^2 + 527274^2 .

It is a cyclic number.

It is not a de Polignac number, because 501046434157 - 2³¹ = 498898950509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501046434167) 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, 133753182 + ... + 133756927.

It is an arithmetic number, because the mean of its divisors is an integer number (125328486535).

Almost surely, 2^501046434157 is an apocalyptic number.

It is an amenable number.

501046434157 is a deficient number, since it is larger than the sum of its proper divisors (267511983).

501046434157 is a wasteful number, since it uses less digits than its factorization.

501046434157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267511982.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 501046434157 in words is "five hundred one billion, forty-six million, four hundred thirty-four thousand, one hundred fifty-seven".