81048588476 has 48 divisors (see below), whose sum is σ = 155571655680. Its totient is φ = 36779477760.

The previous prime is 81048588473. The next prime is 81048588539. The reversal of 81048588476 is 67488584018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81048588473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528635 + ... + 664493.

It is an arithmetic number, because the mean of its divisors is an integer number (3241076160).

Almost surely, 2^81048588476 is an apocalyptic number.

It is an amenable number.

81048588476 is a deficient number, since it is larger than the sum of its proper divisors (74523067204).

81048588476 is a wasteful number, since it uses less digits than its factorization.

81048588476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136194 (or 136192 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 59.

The spelling of 81048588476 in words is "eighty-one billion, forty-eight million, five hundred eighty-eight thousand, four hundred seventy-six".