87142505451 has 4 divisors (see below), whose sum is σ = 116190007272. Its totient is φ = 58095003632.

The previous prime is 87142505419. The next prime is 87142505459. The reversal of 87142505451 is 15450524178.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87142505451 - 2⁵ = 87142505419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87142505459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14523750906 + ... + 14523750911.

It is an arithmetic number, because the mean of its divisors is an integer number (29047501818).

Almost surely, 2^87142505451 is an apocalyptic number.

87142505451 is a deficient number, since it is larger than the sum of its proper divisors (29047501821).

87142505451 is a wasteful number, since it uses less digits than its factorization.

87142505451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29047501820.

The product of its (nonzero) digits is 224000, while the sum is 42.

The spelling of 87142505451 in words is "eighty-seven billion, one hundred forty-two million, five hundred five thousand, four hundred fifty-one".