1620100425134 has 4 divisors (see below), whose sum is σ = 2430150637704. Its totient is φ = 810050212566.

The previous prime is 1620100425133. The next prime is 1620100425193. The reversal of 1620100425134 is 4315240010261.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1620100425097 and 1620100425106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620100425133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405025106282 + ... + 405025106285.

It is an arithmetic number, because the mean of its divisors is an integer number (607537659426).

Almost surely, 2^{1620100425134} is an apocalyptic number.

1620100425134 is a deficient number, since it is larger than the sum of its proper divisors (810050212570).

1620100425134 is an equidigital number, since it uses as much as digits as its factorization.

1620100425134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810050212569.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1620100425134 its reverse (4315240010261), we get a palindrome (5935340435395).

The spelling of 1620100425134 in words is "one trillion, six hundred twenty billion, one hundred million, four hundred twenty-five thousand, one hundred thirty-four".