52391602418 has 16 divisors (see below), whose sum is σ = 79191170520. Its totient is φ = 25994981376.

The previous prime is 52391602409. The next prime is 52391602423. The reversal of 52391602418 is 81420619325.

It can be written as a sum of positive squares in 4 ways, for example, as 41110401049 + 11281201369 = 202757^2 + 106213^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132980 + ... + 349952.

Almost surely, 2^52391602418 is an apocalyptic number.

52391602418 is a deficient number, since it is larger than the sum of its proper divisors (26799568102).

52391602418 is a wasteful number, since it uses less digits than its factorization.

52391602418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217901.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 52391602418 in words is "fifty-two billion, three hundred ninety-one million, six hundred two thousand, four hundred eighteen".