3127779561990 has 64 divisors (see below), whose sum is σ = 7690067646912. Its totient is φ = 813698764800.

The previous prime is 3127779561979. The next prime is 3127779562013. The reversal of 3127779561990 is 991659777213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55017780 + ... + 55074600.

It is an arithmetic number, because the mean of its divisors is an integer number (120157306983).

Almost surely, 2^{3127779561990} is an apocalyptic number.

3127779561990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3127779561990 is an abundant number, since it is smaller than the sum of its proper divisors (4562288084922).

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

3127779561990 is a wasteful number, since it uses less digits than its factorization.

3127779561990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101625.

The product of its (nonzero) digits is 45008460, while the sum is 66.

The spelling of 3127779561990 in words is "three trillion, one hundred twenty-seven billion, seven hundred seventy-nine million, five hundred sixty-one thousand, nine hundred ninety".