20150542400 has 42 divisors (see below), whose sum is σ = 49582932330. Its totient is φ = 8060216320.

The previous prime is 20150542367. The next prime is 20150542429. The reversal of 20150542400 is 424505102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1464745984 + 18685796416 = 38272^2 + 136696^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6295445 + ... + 6298644.

Almost surely, 2^20150542400 is an apocalyptic number.

20150542400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20150542400 is an abundant number, since it is smaller than the sum of its proper divisors (29432389930).

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

20150542400 is a wasteful number, since it uses less digits than its factorization.

20150542400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12594111 (or 12594096 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The spelling of 20150542400 in words is "twenty billion, one hundred fifty million, five hundred forty-two thousand, four hundred".