20154663502450 has 48 divisors (see below), whose sum is σ = 37536223063680. Its totient is φ = 8051431277120.

The previous prime is 20154663502439. The next prime is 20154663502459. The reversal of 20154663502450 is 5420536645102.

It is a junction number, because it is equal to n+sod(n) for n = 20154663502397 and 20154663502406.

It is not an unprimeable number, because it can be changed into a prime (20154663502459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126279399 + ... + 126438901.

It is an arithmetic number, because the mean of its divisors is an integer number (782004647160).

Almost surely, 2^{20154663502450} is an apocalyptic number.

20154663502450 is a deficient number, since it is larger than the sum of its proper divisors (17381559561230).

20154663502450 is a wasteful number, since it uses less digits than its factorization.

20154663502450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162771 (or 162766 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 20154663502450 in words is "twenty trillion, one hundred fifty-four billion, six hundred sixty-three million, five hundred two thousand, four hundred fifty".