20307276550 has 24 divisors (see below), whose sum is σ = 41205311352. Its totient is φ = 7384464000.

The previous prime is 20307276527. The next prime is 20307276559. The reversal of 20307276550 is 5567270302.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20307276559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18460611 + ... + 18461710.

It is an arithmetic number, because the mean of its divisors is an integer number (1716887973).

Almost surely, 2^20307276550 is an apocalyptic number.

20307276550 is an abundant number, since it is smaller than the sum of its proper divisors (20898034802).

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

20307276550 is a wasteful number, since it uses less digits than its factorization.

20307276550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36922344 (or 36922339 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 37.

The spelling of 20307276550 in words is "twenty billion, three hundred seven million, two hundred seventy-six thousand, five hundred fifty".