20154153400 has 24 divisors (see below), whose sum is σ = 46858407120. Its totient is φ = 8061661280.

The previous prime is 20154153391. The next prime is 20154153421. The reversal of 20154153400 is 435145102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50385184 + ... + 50385583.

It is an arithmetic number, because the mean of its divisors is an integer number (1952433630).

Almost surely, 2^20154153400 is an apocalyptic number.

20154153400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20154153400 is an abundant number, since it is smaller than the sum of its proper divisors (26704253720).

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

20154153400 is a wasteful number, since it uses less digits than its factorization.

20154153400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100770783 (or 100770774 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20154153400 its reverse (435145102), we get a palindrome (20589298502).

The spelling of 20154153400 in words is "twenty billion, one hundred fifty-four million, one hundred fifty-three thousand, four hundred".