20454537950 has 288 divisors, whose sum is σ = 50443298208. Its totient is φ = 6096384000.

The previous prime is 20454537931. The next prime is 20454537959. The reversal of 20454537950 is 5973545402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454537959) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 72791810 + ... + 72792090.

It is an arithmetic number, because the mean of its divisors is an integer number (175150341).

Almost surely, 2^20454537950 is an apocalyptic number.

20454537950 is an abundant number, since it is smaller than the sum of its proper divisors (29988760258).

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

20454537950 is a wasteful number, since it uses less digits than its factorization.

20454537950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 20454537950 in words is "twenty billion, four hundred fifty-four million, five hundred thirty-seven thousand, nine hundred fifty".