81224615462 has 16 divisors (see below), whose sum is σ = 125134474752. Its totient is φ = 39518297280.

The previous prime is 81224615447. The next prime is 81224615473. The reversal of 81224615462 is 26451642218.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261733 + ... + 1324544.

It is an arithmetic number, because the mean of its divisors is an integer number (7820904672).

Almost surely, 2^81224615462 is an apocalyptic number.

81224615462 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

81224615462 is a deficient number, since it is larger than the sum of its proper divisors (43909859290).

81224615462 is a wasteful number, since it uses less digits than its factorization.

81224615462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586703.

The product of its digits is 184320, while the sum is 41.

The spelling of 81224615462 in words is "eighty-one billion, two hundred twenty-four million, six hundred fifteen thousand, four hundred sixty-two".