90048438586378 has 4 divisors (see below), whose sum is σ = 135072657879570. Its totient is φ = 45024219293188.

The previous prime is 90048438586361. The next prime is 90048438586391. The reversal of 90048438586378 is 87368583484009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76358638385649 + 13689800200729 = 8738343^2 + 3699973^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90048438586378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22512109646593 + ... + 22512109646596.

Almost surely, 2^{90048438586378} is an apocalyptic number.

90048438586378 is a deficient number, since it is larger than the sum of its proper divisors (45024219293192).

90048438586378 is a wasteful number, since it uses less digits than its factorization.

90048438586378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45024219293191.

The product of its (nonzero) digits is 1114767360, while the sum is 73.

The spelling of 90048438586378 in words is "ninety trillion, forty-eight billion, four hundred thirty-eight million, five hundred eighty-six thousand, three hundred seventy-eight".