20152554315450 has 48 divisors (see below), whose sum is σ = 51701725565280. Its totient is φ = 5188703638720.

The previous prime is 20152554315431. The next prime is 20152554315473. The reversal of 20152554315450 is 5451345525102.

It is a happy number.

It is a super-2 number, since 2×20152554315450² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2316381204 + ... + 2316389903.

It is an arithmetic number, because the mean of its divisors is an integer number (1077119282610).

Almost surely, 2^{20152554315450} is an apocalyptic number.

20152554315450 is an abundant number, since it is smaller than the sum of its proper divisors (31549171249830).

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

20152554315450 is a wasteful number, since it uses less digits than its factorization.

20152554315450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632771151 (or 4632771146 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 20152554315450 in words is "twenty trillion, one hundred fifty-two billion, five hundred fifty-four million, three hundred fifteen thousand, four hundred fifty".