56620500743447 has 48 divisors (see below), whose sum is σ = 63724032365760. Its totient is φ = 50038910423040.

The previous prime is 56620500743419. The next prime is 56620500743473. The reversal of 56620500743447 is 74434700502665.

It is a de Polignac number, because none of the positive numbers 2^k-56620500743447 is a prime.

It is a super-2 number, since 2×56620500743447² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56620500743407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459188579 + ... + 459311867.

It is an arithmetic number, because the mean of its divisors is an integer number (1327584007620).

Almost surely, 2^{56620500743447} is an apocalyptic number.

56620500743447 is a deficient number, since it is larger than the sum of its proper divisors (7103531622313).

56620500743447 is a wasteful number, since it uses less digits than its factorization.

56620500743447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123704 (or 123633 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 53.

The spelling of 56620500743447 in words is "fifty-six trillion, six hundred twenty billion, five hundred million, seven hundred forty-three thousand, four hundred forty-seven".