20471878701 has 24 divisors (see below), whose sum is σ = 30059527680. Its totient is φ = 13423819200.

The previous prime is 20471878699. The next prime is 20471878723. The reversal of 20471878701 is 10787817402.

20471878701 is a `hidden beast` number, since 20 + 471 + 87 + 87 + 0 + 1 = 666.

It is not a de Polignac number, because 20471878701 - 2¹ = 20471878699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20471878201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86086 + ... + 219896.

It is an arithmetic number, because the mean of its divisors is an integer number (1252480320).

Almost surely, 2^20471878701 is an apocalyptic number.

It is an amenable number.

20471878701 is a deficient number, since it is larger than the sum of its proper divisors (9587648979).

20471878701 is a wasteful number, since it uses less digits than its factorization.

20471878701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134097 (or 134094 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 45.

The spelling of 20471878701 in words is "twenty billion, four hundred seventy-one million, eight hundred seventy-eight thousand, seven hundred one".