20551850037 has 16 divisors (see below), whose sum is σ = 30456384000. Its totient is φ = 13697093952.

The previous prime is 20551850029. The next prime is 20551850051. The reversal of 20551850037 is 73005815502.

20551850037 is a `hidden beast` number, since 20 + 551 + 8 + 50 + 0 + 37 = 666.

It is not a de Polignac number, because 20551850037 - 2³ = 20551850029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20551849983 and 20551850010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551850087) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22612 + ... + 203997.

It is an arithmetic number, because the mean of its divisors is an integer number (1903524000).

Almost surely, 2^20551850037 is an apocalyptic number.

20551850037 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20551850037 is a deficient number, since it is larger than the sum of its proper divisors (9904533963).

20551850037 is a wasteful number, since it uses less digits than its factorization.

20551850037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229977 (or 229971 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 20551850037 in words is "twenty billion, five hundred fifty-one million, eight hundred fifty thousand, thirty-seven".