87151431420 has 36 divisors (see below), whose sum is σ = 264359342520. Its totient is φ = 23240381664.

The previous prime is 87151431403. The next prime is 87151431421. The reversal of 87151431420 is 2413415178.

87151431420 is a `hidden beast` number, since 8 + 71 + 514 + 31 + 42 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87151431421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242087130 + ... + 242087489.

It is an arithmetic number, because the mean of its divisors is an integer number (7343315070).

Almost surely, 2^87151431420 is an apocalyptic number.

It is an amenable number.

87151431420 is an abundant number, since it is smaller than the sum of its proper divisors (177207911100).

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

87151431420 is a wasteful number, since it uses less digits than its factorization.

87151431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484174634 (or 484174629 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 87151431420 its reverse (2413415178), we get a palindrome (89564846598).

The spelling of 87151431420 in words is "eighty-seven billion, one hundred fifty-one million, four hundred thirty-one thousand, four hundred twenty".