505212161540 has 24 divisors (see below), whose sum is σ = 1064401400832. Its totient is φ = 201426605280.

The previous prime is 505212161533. The next prime is 505212161561. The reversal of 505212161540 is 45161212505.

It is a junction number, because it is equal to n+sod(n) for n = 505212161497 and 505212161506.

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, 41134916 + ... + 41147195.

It is an arithmetic number, because the mean of its divisors is an integer number (44350058368).

Almost surely, 2^505212161540 is an apocalyptic number.

It is an amenable number.

505212161540 is an abundant number, since it is smaller than the sum of its proper divisors (559189239292).

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

505212161540 is a wasteful number, since it uses less digits than its factorization.

505212161540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82282427 (or 82282425 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 505212161540 in words is "five hundred five billion, two hundred twelve million, one hundred sixty-one thousand, five hundred forty".