42780125660 has 24 divisors (see below), whose sum is σ = 95122868400. Its totient is φ = 16105458944.

The previous prime is 42780125627. The next prime is 42780125693. The reversal of 42780125660 is 6652108724.

It is an interprime number because it is at equal distance from previous prime (42780125627) and next prime (42780125693).

It is a congruent 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, 62911610 + ... + 62912289.

It is an arithmetic number, because the mean of its divisors is an integer number (3963452850).

Almost surely, 2^42780125660 is an apocalyptic number.

It is an amenable number.

42780125660 is an abundant number, since it is smaller than the sum of its proper divisors (52342742740).

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

42780125660 is a wasteful number, since it uses less digits than its factorization.

42780125660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125823925 (or 125823923 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 42780125660 in words is "forty-two billion, seven hundred eighty million, one hundred twenty-five thousand, six hundred sixty".