87267728542 has 4 divisors (see below), whose sum is σ = 130901592816. Its totient is φ = 43633864270.

The previous prime is 87267728533. The next prime is 87267728573. The reversal of 87267728542 is 24582776278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24582776278 = 2 ⋅12291388139.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21816932134 + ... + 21816932137.

It is an arithmetic number, because the mean of its divisors is an integer number (32725398204).

Almost surely, 2^87267728542 is an apocalyptic number.

87267728542 is a deficient number, since it is larger than the sum of its proper divisors (43633864274).

87267728542 is a wasteful number, since it uses less digits than its factorization.

87267728542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43633864273.

The product of its digits is 21073920, while the sum is 58.

The spelling of 87267728542 in words is "eighty-seven billion, two hundred sixty-seven million, seven hundred twenty-eight thousand, five hundred forty-two".