81232695150 has 24 divisors (see below), whose sum is σ = 201457084344. Its totient is φ = 21662052000.

The previous prime is 81232695121. The next prime is 81232695163. The reversal of 81232695150 is 5159623218.

It is a super-2 number, since 2×81232695150² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270775501 + ... + 270775800.

It is an arithmetic number, because the mean of its divisors is an integer number (8394045181).

Almost surely, 2^81232695150 is an apocalyptic number.

81232695150 is an abundant number, since it is smaller than the sum of its proper divisors (120224389194).

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

81232695150 is a wasteful number, since it uses less digits than its factorization.

81232695150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541551316 (or 541551311 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 81232695150 in words is "eighty-one billion, two hundred thirty-two million, six hundred ninety-five thousand, one hundred fifty".