1623552770647 has 4 divisors (see below), whose sum is σ = 1623567892360. Its totient is φ = 1623537648936.

The previous prime is 1623552770633. The next prime is 1623552770867. The reversal of 1623552770647 is 7460772553261.

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

It is a cyclic number.

It is not a de Polignac number, because 1623552770647 - 2²³ = 1623544382039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623552770617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7398648 + ... + 7614925.

It is an arithmetic number, because the mean of its divisors is an integer number (405891973090).

Almost surely, 2^{1623552770647} is an apocalyptic number.

1623552770647 is a deficient number, since it is larger than the sum of its proper divisors (15121713).

1623552770647 is a wasteful number, since it uses less digits than its factorization.

1623552770647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15121712.

The product of its (nonzero) digits is 14817600, while the sum is 55.

The spelling of 1623552770647 in words is "one trillion, six hundred twenty-three billion, five hundred fifty-two million, seven hundred seventy thousand, six hundred forty-seven".