20151451404 has 96 divisors (see below), whose sum is σ = 59786979840. Its totient is φ = 5749942464.

The previous prime is 20151451391. The next prime is 20151451457. The reversal of 20151451404 is 40415415102.

20151451404 is a `hidden beast` number, since 2 + 0 + 1 + 514 + 5 + 140 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 567147 + ... + 601629.

It is an arithmetic number, because the mean of its divisors is an integer number (622781040).

Almost surely, 2^20151451404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20151451404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29893489920).

20151451404 is an abundant number, since it is smaller than the sum of its proper divisors (39635528436).

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

20151451404 is a wasteful number, since it uses less digits than its factorization.

20151451404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35276 (or 35268 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 20151451404 its reverse (40415415102), we get a palindrome (60566866506).

The spelling of 20151451404 in words is "twenty billion, one hundred fifty-one million, four hundred fifty-one thousand, four hundred four".