19977526011 has 16 divisors (see below), whose sum is σ = 26697052928. Its totient is φ = 13288212000.

The previous prime is 19977525991. The next prime is 19977526033. The reversal of 19977526011 is 11062577991.

It is not a de Polignac number, because 19977526011 - 2¹⁴ = 19977509627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19977526111) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2713986 + ... + 2721336.

It is an arithmetic number, because the mean of its divisors is an integer number (1668565808).

Almost surely, 2^19977526011 is an apocalyptic number.

19977526011 is a deficient number, since it is larger than the sum of its proper divisors (6719526917).

19977526011 is a wasteful number, since it uses less digits than its factorization.

19977526011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9282.

The product of its (nonzero) digits is 238140, while the sum is 48.

The spelling of 19977526011 in words is "nineteen billion, nine hundred seventy-seven million, five hundred twenty-six thousand, eleven".