20233503777720 has 64 divisors (see below), whose sum is σ = 60931311851520. Its totient is φ = 5375085405824.

The previous prime is 20233503777691. The next prime is 20233503777749. The reversal of 20233503777720 is 2777730533202.

It is an interprime number because it is at equal distance from previous prime (20233503777691) and next prime (20233503777749).

It is a super-2 number, since 2×20233503777720² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20233503777720.

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, 320524584 + ... + 320587703.

It is an arithmetic number, because the mean of its divisors is an integer number (952051747680).

Almost surely, 2^{20233503777720} is an apocalyptic number.

20233503777720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20233503777720 is an abundant number, since it is smaller than the sum of its proper divisors (40697808073800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20233503777720 is a wasteful number, since it uses less digits than its factorization.

20233503777720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641112564 (or 641112560 counting only the distinct ones).

The product of its (nonzero) digits is 2593080, while the sum is 48.

The spelling of 20233503777720 in words is "twenty trillion, two hundred thirty-three billion, five hundred three million, seven hundred seventy-seven thousand, seven hundred twenty".