90651929250 has 128 divisors (see below), whose sum is σ = 230190315264. Its totient is φ = 23757120000.

The previous prime is 90651929239. The next prime is 90651929257. The reversal of 90651929250 is 5292915609.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90651929250.

It is not an unprimeable number, because it can be changed into a prime (90651929257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16038925 + ... + 16044575.

It is an arithmetic number, because the mean of its divisors is an integer number (1798361838).

Almost surely, 2^90651929250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90651929250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115095157632).

90651929250 is an abundant number, since it is smaller than the sum of its proper divisors (139538386014).

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

90651929250 is a wasteful number, since it uses less digits than its factorization.

90651929250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037 (or 6027 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 48.

The spelling of 90651929250 in words is "ninety billion, six hundred fifty-one million, nine hundred twenty-nine thousand, two hundred fifty".