418211520157 has 4 divisors (see below), whose sum is σ = 418212990076. Its totient is φ = 418210050240.

The previous prime is 418211520131. The next prime is 418211520161. The reversal of 418211520157 is 751025112814.

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 343784041561 + 74427478596 = 586331^2 + 272814^2 .

It is a cyclic number.

It is not a de Polignac number, because 418211520157 - 2¹⁵ = 418211487389 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 (418211520457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156348 + ... + 927829.

It is an arithmetic number, because the mean of its divisors is an integer number (104553247519).

Almost surely, 2^418211520157 is an apocalyptic number.

It is an amenable number.

418211520157 is a deficient number, since it is larger than the sum of its proper divisors (1469919).

418211520157 is a wasteful number, since it uses less digits than its factorization.

418211520157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469918.

The product of its (nonzero) digits is 22400, while the sum is 37.

The spelling of 418211520157 in words is "four hundred eighteen billion, two hundred eleven million, five hundred twenty thousand, one hundred fifty-seven".