72821454430 has 16 divisors (see below), whose sum is σ = 131117562864. Its totient is φ = 29119927360.

The previous prime is 72821454403. The next prime is 72821454449. The reversal of 72821454430 is 3445412827.

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, 1046407 + ... + 1113826.

It is an arithmetic number, because the mean of its divisors is an integer number (8194847679).

Almost surely, 2^72821454430 is an apocalyptic number.

72821454430 is a deficient number, since it is larger than the sum of its proper divisors (58296108434).

72821454430 is a wasteful number, since it uses less digits than its factorization.

72821454430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163611.

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 72821454430 in words is "seventy-two billion, eight hundred twenty-one million, four hundred fifty-four thousand, four hundred thirty".