20645755754602 has 32 divisors (see below), whose sum is σ = 34438176460800. Its totient is φ = 9204282126000.

The previous prime is 20645755754599. The next prime is 20645755754609.

It is a happy number.

20645755754602 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20645755754609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39072102 + ... + 39596977.

It is an arithmetic number, because the mean of its divisors is an integer number (1076193014400).

Almost surely, 2^{20645755754602} is an apocalyptic number.

20645755754602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20645755754602 is a deficient number, since it is larger than the sum of its proper divisors (13792420706198).

20645755754602 is a wasteful number, since it uses less digits than its factorization.

20645755754602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78669322.

The product of its (nonzero) digits is 70560000, while the sum is 58.

The spelling of 20645755754602 in words is "twenty trillion, six hundred forty-five billion, seven hundred fifty-five million, seven hundred fifty-four thousand, six hundred two".