87534122990 has 16 divisors (see below), whose sum is σ = 157837371120. Its totient is φ = 34952327040.

The previous prime is 87534122987. The next prime is 87534122999. The reversal of 87534122990 is 9922143578.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87534122999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7659275 + ... + 7670694.

It is an arithmetic number, because the mean of its divisors is an integer number (9864835695).

Almost surely, 2^87534122990 is an apocalyptic number.

87534122990 is a deficient number, since it is larger than the sum of its proper divisors (70303248130).

87534122990 is a wasteful number, since it uses less digits than its factorization.

87534122990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15330547.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 87534122990 in words is "eighty-seven billion, five hundred thirty-four million, one hundred twenty-two thousand, nine hundred ninety".