72646320475430 has 96 divisors (see below), whose sum is σ = 143637459874560. Its totient is φ = 26436751985280.

The previous prime is 72646320475429. The next prime is 72646320475541. The reversal of 72646320475430 is 3457402364627.

It is a super-2 number, since 2×72646320475430² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369830981 + ... + 370027359.

It is an arithmetic number, because the mean of its divisors is an integer number (1496223540360).

Almost surely, 2^{72646320475430} is an apocalyptic number.

72646320475430 is a deficient number, since it is larger than the sum of its proper divisors (70991139399130).

72646320475430 is a wasteful number, since it uses less digits than its factorization.

72646320475430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199566 (or 199553 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 53.

The spelling of 72646320475430 in words is "seventy-two trillion, six hundred forty-six billion, three hundred twenty million, four hundred seventy-five thousand, four hundred thirty".