20620356464530 has 16 divisors (see below), whose sum is σ = 37130966901504. Its totient is φ = 8244959193520.

The previous prime is 20620356464497. The next prime is 20620356464597. The reversal of 20620356464530 is 3546465302602.

It is a super-2 number, since 2×20620356464530² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397896832 + ... + 397948651.

It is an arithmetic number, because the mean of its divisors is an integer number (2320685431344).

Almost surely, 2^{20620356464530} is an apocalyptic number.

20620356464530 is a deficient number, since it is larger than the sum of its proper divisors (16510610436974).

20620356464530 is a wasteful number, since it uses less digits than its factorization.

20620356464530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795848081.

The product of its (nonzero) digits is 3110400, while the sum is 46.

The spelling of 20620356464530 in words is "twenty trillion, six hundred twenty billion, three hundred fifty-six million, four hundred sixty-four thousand, five hundred thirty".