19776626090 has 16 divisors (see below), whose sum is σ = 38336229288. Its totient is φ = 7302138816.

The previous prime is 19776626087. The next prime is 19776626131. The reversal of 19776626090 is 9062667791.

It can be written as a sum of positive squares in 4 ways, for example, as 5511429121 + 14265196969 = 74239^2 + 119437^2 .

It is a super-2 number, since 2×19776626090² (a number of 21 digits) contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 76063817 + ... + 76064076.

Almost surely, 2^19776626090 is an apocalyptic number.

19776626090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19776626090 is a deficient number, since it is larger than the sum of its proper divisors (18559603198).

19776626090 is a wasteful number, since it uses less digits than its factorization.

19776626090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152127913.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 19776626090 in words is "nineteen billion, seven hundred seventy-six million, six hundred twenty-six thousand, ninety".