81038464822 has 32 divisors (see below), whose sum is σ = 145080000000. Its totient is φ = 33193974528.

The previous prime is 81038464813. The next prime is 81038464831. The reversal of 81038464822 is 22846483018.

It is an interprime number because it is at equal distance from previous prime (81038464813) and next prime (81038464831).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301429 + ... + 502927.

It is an arithmetic number, because the mean of its divisors is an integer number (4533750000).

Almost surely, 2^81038464822 is an apocalyptic number.

81038464822 is a deficient number, since it is larger than the sum of its proper divisors (64041535178).

81038464822 is a wasteful number, since it uses less digits than its factorization.

81038464822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202780.

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 81038464822 in words is "eighty-one billion, thirty-eight million, four hundred sixty-four thousand, eight hundred twenty-two".