20413205346644 has 48 divisors (see below), whose sum is σ = 40255278690816. Its totient is φ = 8975768400000.

The previous prime is 20413205346619. The next prime is 20413205346701. The reversal of 20413205346644 is 44664350231402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 20413205346595 and 20413205346604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35957732 + ... + 36521019.

It is an arithmetic number, because the mean of its divisors is an integer number (838651639392).

Almost surely, 2^{20413205346644} is an apocalyptic number.

It is an amenable number.

20413205346644 is a deficient number, since it is larger than the sum of its proper divisors (19842073344172).

20413205346644 is a wasteful number, since it uses less digits than its factorization.

20413205346644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72478976 (or 72478974 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 20413205346644 in words is "twenty trillion, four hundred thirteen billion, two hundred five million, three hundred forty-six thousand, six hundred forty-four".