20154542352 has 80 divisors (see below), whose sum is σ = 60626655360. Its totient is φ = 5649785856.

The previous prime is 20154542347. The next prime is 20154542377. The reversal of 20154542352 is 25324545102.

It is a happy number.

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, 548077 + ... + 583692.

It is an arithmetic number, because the mean of its divisors is an integer number (757833192).

Almost surely, 2^20154542352 is an apocalyptic number.

It is an amenable number.

20154542352 is an abundant number, since it is smaller than the sum of its proper divisors (40472113008).

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

20154542352 is a wasteful number, since it uses less digits than its factorization.

20154542352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131840 (or 1131834 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 20154542352 in words is "twenty billion, one hundred fifty-four million, five hundred forty-two thousand, three hundred fifty-two".