20012551610 has 32 divisors (see below), whose sum is σ = 38561227200. Its totient is φ = 7455162240.

The previous prime is 20012551583. The next prime is 20012551613. The reversal of 20012551610 is 1615521002.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20012551613) 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, 881411 + ... + 903830.

It is an arithmetic number, because the mean of its divisors is an integer number (1205038350).

Almost surely, 2^20012551610 is an apocalyptic number.

20012551610 is a deficient number, since it is larger than the sum of its proper divisors (18548675590).

20012551610 is a wasteful number, since it uses less digits than its factorization.

20012551610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785326.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 20012551610 in words is "twenty billion, twelve million, five hundred fifty-one thousand, six hundred ten".