48815817849890 has 48 divisors (see below), whose sum is σ = 110076987078072. Its totient is φ = 15449401691136.

The previous prime is 48815817849871. The next prime is 48815817849899. The reversal of 48815817849890 is 9894871851884.

It can be written as a sum of positive squares in 4 ways, for example, as 26941217583049 + 21874600266841 = 5190493^2 + 4677029^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48815817849899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3831690479 + ... + 3831703218.

Almost surely, 2^{48815817849890} is an apocalyptic number.

48815817849890 is an abundant number, since it is smaller than the sum of its proper divisors (61261169228182).

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

48815817849890 is a wasteful number, since it uses less digits than its factorization.

48815817849890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663393731 (or 7663393724 counting only the distinct ones).

The product of its (nonzero) digits is 1486356480, while the sum is 80.

The spelling of 48815817849890 in words is "forty-eight trillion, eight hundred fifteen billion, eight hundred seventeen million, eight hundred forty-nine thousand, eight hundred ninety".