20550367140 has 48 divisors (see below), whose sum is σ = 57858964800. Its totient is φ = 5449818240.

The previous prime is 20550367133. The next prime is 20550367151. The reversal of 20550367140 is 4176305502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 935290 + ... + 957009.

It is an arithmetic number, because the mean of its divisors is an integer number (1205395100).

Almost surely, 2^20550367140 is an apocalyptic number.

20550367140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20550367140 is an abundant number, since it is smaller than the sum of its proper divisors (37308597660).

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

20550367140 is a wasteful number, since it uses less digits than its factorization.

20550367140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892492 (or 1892490 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 20550367140 in words is "twenty billion, five hundred fifty million, three hundred sixty-seven thousand, one hundred forty".