72421557010 has 32 divisors (see below), whose sum is σ = 142293672000. Its totient is φ = 26319543360.

The previous prime is 72421556983. The next prime is 72421557037. The reversal of 72421557010 is 1075512427.

It is an interprime number because it is at equal distance from previous prime (72421556983) and next prime (72421557037).

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, 6865 + ... + 380644.

It is an arithmetic number, because the mean of its divisors is an integer number (4446677250).

Almost surely, 2^72421557010 is an apocalyptic number.

72421557010 is a deficient number, since it is larger than the sum of its proper divisors (69872114990).

72421557010 is a wasteful number, since it uses less digits than its factorization.

72421557010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389226.

The product of its (nonzero) digits is 19600, while the sum is 34.

The spelling of 72421557010 in words is "seventy-two billion, four hundred twenty-one million, five hundred fifty-seven thousand, ten".