126620478747 has 72 divisors (see below), whose sum is σ = 221109552720. Its totient is φ = 72287995752.

The previous prime is 126620478713. The next prime is 126620478757. The reversal of 126620478747 is 747874026621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

126620478747 is a `hidden beast` number, since 1 + 2 + 6 + 620 + 4 + 7 + 8 + 7 + 4 + 7 = 666.

It is not a de Polignac number, because 126620478747 - 2¹⁰ = 126620477723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126620478693 and 126620478702.

It is not an unprimeable number, because it can be changed into a prime (126620478707) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 116485638 + ... + 116486724.

It is an arithmetic number, because the mean of its divisors is an integer number (3070966010).

Almost surely, 2^126620478747 is an apocalyptic number.

126620478747 is a deficient number, since it is larger than the sum of its proper divisors (94489073973).

126620478747 is an frugal number, since it uses more digits than its factorization.

126620478747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 54.

The spelling of 126620478747 in words is "one hundred twenty-six billion, six hundred twenty million, four hundred seventy-eight thousand, seven hundred forty-seven".