52161716940 has 48 divisors (see below), whose sum is σ = 146438234880. Its totient is φ = 13873083840.

The previous prime is 52161716939. The next prime is 52161716941. The reversal of 52161716940 is 4961716125.

It is an interprime number because it is at equal distance from previous prime (52161716939) and next prime (52161716941).

It is a junction number, because it is equal to n+sod(n) for n = 52161716892 and 52161716901.

It is not an unprimeable number, because it can be changed into a prime (52161716941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1124176 + ... + 1169655.

It is an arithmetic number, because the mean of its divisors is an integer number (3050796560).

Almost surely, 2^52161716940 is an apocalyptic number.

It is an amenable number.

52161716940 is an abundant number, since it is smaller than the sum of its proper divisors (94276517940).

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

52161716940 is a wasteful number, since it uses less digits than its factorization.

52161716940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294222 (or 2294220 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 52161716940 in words is "fifty-two billion, one hundred sixty-one million, seven hundred sixteen thousand, nine hundred forty".