49128481378 has 16 divisors (see below), whose sum is σ = 75695605560. Its totient is φ = 23896809216.

The previous prime is 49128481301. The next prime is 49128481429. The reversal of 49128481378 is 87318482194.

It can be written as a sum of positive squares in 4 ways, for example, as 48517551289 + 610930089 = 220267^2 + 24717^2 .

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, 495450 + ... + 586282.

Almost surely, 2^49128481378 is an apocalyptic number.

49128481378 is a deficient number, since it is larger than the sum of its proper divisors (26567124182).

49128481378 is a wasteful number, since it uses less digits than its factorization.

49128481378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98181.

The product of its digits is 3096576, while the sum is 55.

The spelling of 49128481378 in words is "forty-nine billion, one hundred twenty-eight million, four hundred eighty-one thousand, three hundred seventy-eight".