252160505040 has 80 divisors (see below), whose sum is σ = 806913639936. Its totient is φ = 65073676800.

The previous prime is 252160505027. The next prime is 252160505059. The reversal of 252160505040 is 40505061252.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 252160504989 and 252160505007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16938831 + ... + 16953710.

Almost surely, 2^252160505040 is an apocalyptic number.

252160505040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252160505040 is an abundant number, since it is smaller than the sum of its proper divisors (554753134896).

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

252160505040 is a wasteful number, since it uses less digits than its factorization.

252160505040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33892588 (or 33892582 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 252160505040 its reverse (40505061252), we get a palindrome (292665566292).

The spelling of 252160505040 in words is "two hundred fifty-two billion, one hundred sixty million, five hundred five thousand, forty".