5581777938 has 16 divisors (see below), whose sum is σ = 12178424736. Its totient is φ = 1691447840.

The previous prime is 5581777933. The next prime is 5581777963. The reversal of 5581777938 is 8397771855.

It is not an unprimeable number, because it can be changed into a prime (5581777933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42286131 + ... + 42286262.

It is an arithmetic number, because the mean of its divisors is an integer number (761151546).

Almost surely, 2^5581777938 is an apocalyptic number.

5581777938 is an abundant number, since it is smaller than the sum of its proper divisors (6596646798).

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

5581777938 is a wasteful number, since it uses less digits than its factorization.

5581777938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84572409.

The product of its digits is 14817600, while the sum is 60.

The square root of 5581777938 is about 74711.2972581791. The cubic root of 5581777938 is about 1773.8797865163.

The spelling of 5581777938 in words is "five billion, five hundred eighty-one million, seven hundred seventy-seven thousand, nine hundred thirty-eight".