48778541690 has 8 divisors (see below), whose sum is σ = 87801375060. Its totient is φ = 19511416672.

The previous prime is 48778541671. The next prime is 48778541717. The reversal of 48778541690 is 9614587784.

It can be written as a sum of positive squares in 2 ways, for example, as 48110474281 + 668067409 = 219341^2 + 25847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×48778541690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2438927075 + ... + 2438927094.

Almost surely, 2^48778541690 is an apocalyptic number.

48778541690 is a deficient number, since it is larger than the sum of its proper divisors (39022833370).

48778541690 is a wasteful number, since it uses less digits than its factorization.

48778541690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877854176.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 48778541690 in words is "forty-eight billion, seven hundred seventy-eight million, five hundred forty-one thousand, six hundred ninety".