81250946277 has 64 divisors (see below), whose sum is σ = 118368552960. Its totient is φ = 49456742400.

The previous prime is 81250946263. The next prime is 81250946291. The reversal of 81250946277 is 77264905218.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (81250946263) and next prime (81250946291).

It is not a de Polignac number, because 81250946277 - 2¹⁰ = 81250945253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81250946177) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24405349 + ... + 24408677.

It is an arithmetic number, because the mean of its divisors is an integer number (1849508640).

Almost surely, 2^81250946277 is an apocalyptic number.

It is an amenable number.

81250946277 is a deficient number, since it is larger than the sum of its proper divisors (37117606683).

81250946277 is a wasteful number, since it uses less digits than its factorization.

81250946277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 81250946277 in words is "eighty-one billion, two hundred fifty million, nine hundred forty-six thousand, two hundred seventy-seven".