20837469408 has 48 divisors (see below), whose sum is σ = 62512410240. Its totient is φ = 5953562496.

The previous prime is 20837469407. The next prime is 20837469409. The reversal of 20837469408 is 80496473802.

It is an interprime number because it is at equal distance from previous prime (20837469407) and next prime (20837469409).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20837469407) 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 7 ways as a sum of consecutive naturals, for example, 15503398 + ... + 15504741.

It is an arithmetic number, because the mean of its divisors is an integer number (1302341880).

Almost surely, 2^20837469408 is an apocalyptic number.

20837469408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20837469408 is an abundant number, since it is smaller than the sum of its proper divisors (41674940832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20837469408 is a wasteful number, since it uses less digits than its factorization.

20837469408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31008159 (or 31008151 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 20837469408 in words is "twenty billion, eight hundred thirty-seven million, four hundred sixty-nine thousand, four hundred eight".