650540424157 has 4 divisors (see below), whose sum is σ = 700581995260. Its totient is φ = 600498853056.

The previous prime is 650540424119. The next prime is 650540424211. The reversal of 650540424157 is 751424045056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63579118201 + 586961305956 = 252149^2 + 766134^2 .

It is a cyclic number.

It is not a de Polignac number, because 650540424157 - 2³¹ = 648392940509 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 (650540424757) 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, 25020785532 + ... + 25020785557.

It is an arithmetic number, because the mean of its divisors is an integer number (175145498815).

Almost surely, 2^650540424157 is an apocalyptic number.

It is an amenable number.

650540424157 is a deficient number, since it is larger than the sum of its proper divisors (50041571103).

650540424157 is a wasteful number, since it uses less digits than its factorization.

650540424157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50041571102.

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 650540424157 in words is "six hundred fifty billion, five hundred forty million, four hundred twenty-four thousand, one hundred fifty-seven".