20154415320 has 192 divisors, whose sum is σ = 70645629600. Its totient is φ = 4953692160.

The previous prime is 20154415301. The next prime is 20154415327. The reversal of 20154415320 is 2351445102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154415327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3558651 + ... + 3564309.

Almost surely, 2^20154415320 is an apocalyptic number.

20154415320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20154415320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35322814800).

20154415320 is an abundant number, since it is smaller than the sum of its proper divisors (50491214280).

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

20154415320 is a wasteful number, since it uses less digits than its factorization.

20154415320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450 (or 6443 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20154415320 in words is "twenty billion, one hundred fifty-four million, four hundred fifteen thousand, three hundred twenty".