2620546643644 has 12 divisors (see below), whose sum is σ = 4648777950544. Its totient is φ = 1292324372064.

The previous prime is 2620546643633. The next prime is 2620546643713. The reversal of 2620546643644 is 4463466450262.

It is a junction number, because it is equal to n+sod(n) for n = 2620546643591 and 2620546643600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4487237112 + ... + 4487237695.

Almost surely, 2^{2620546643644} is an apocalyptic number.

It is an amenable number.

2620546643644 is a deficient number, since it is larger than the sum of its proper divisors (2028231306900).

2620546643644 is a wasteful number, since it uses less digits than its factorization.

2620546643644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8974474884 (or 8974474882 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 52.

The spelling of 2620546643644 in words is "two trillion, six hundred twenty billion, five hundred forty-six million, six hundred forty-three thousand, six hundred forty-four".