52161356450 has 96 divisors (see below), whose sum is σ = 116799369600. Its totient is φ = 16930529280.

The previous prime is 52161356447. The next prime is 52161356453. The reversal of 52161356450 is 5465316125.

It is an interprime number because it is at equal distance from previous prime (52161356447) and next prime (52161356453).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (52161356453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17880392 + ... + 17883308.

It is an arithmetic number, because the mean of its divisors is an integer number (1216660100).

Almost surely, 2^52161356450 is an apocalyptic number.

52161356450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52161356450 is an abundant number, since it is smaller than the sum of its proper divisors (64638013150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52161356450 is a wasteful number, since it uses less digits than its factorization.

52161356450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5644 (or 5639 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 52161356450 in words is "fifty-two billion, one hundred sixty-one million, three hundred fifty-six thousand, four hundred fifty".