71420620473 has 96 divisors (see below), whose sum is σ = 116992512000. Its totient is φ = 41765068800.

The previous prime is 71420620451. The next prime is 71420620553. The reversal of 71420620473 is 37402602417.

71420620473 is a `hidden beast` number, since 7 + 1 + 4 + 20 + 620 + 4 + 7 + 3 = 666.

It is not a de Polignac number, because 71420620473 - 2²⁰ = 71419571897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71420620433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15360253 + ... + 15364901.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672000).

Almost surely, 2^71420620473 is an apocalyptic number.

It is an amenable number.

71420620473 is a deficient number, since it is larger than the sum of its proper divisors (45571891527).

71420620473 is a wasteful number, since it uses less digits than its factorization.

71420620473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823 (or 4820 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 71420620473 in words is "seventy-one billion, four hundred twenty million, six hundred twenty thousand, four hundred seventy-three".