549903081378 has 16 divisors (see below), whose sum is σ = 1256921328960. Its totient is φ = 157115166096.

The previous prime is 549903081347. The next prime is 549903081401. The reversal of 549903081378 is 873180309945.

It is a Curzon 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, 6546465213 + ... + 6546465296.

It is an arithmetic number, because the mean of its divisors is an integer number (78557583060).

Almost surely, 2^549903081378 is an apocalyptic number.

549903081378 is an abundant number, since it is smaller than the sum of its proper divisors (707018247582).

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

549903081378 is a wasteful number, since it uses less digits than its factorization.

549903081378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13092930521.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 549903081378 in words is "five hundred forty-nine billion, nine hundred three million, eighty-one thousand, three hundred seventy-eight".