20610640012354 has 128 divisors (see below), whose sum is σ = 40458669834240. Its totient is φ = 7662235585536.

The previous prime is 20610640012331. The next prime is 20610640012357. The reversal of 20610640012354 is 45321004601602.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (20610640012357) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35202832 + ... + 35783524.

It is an arithmetic number, because the mean of its divisors is an integer number (316083358080).

Almost surely, 2^{20610640012354} is an apocalyptic number.

20610640012354 is a deficient number, since it is larger than the sum of its proper divisors (19848029821886).

20610640012354 is a wasteful number, since it uses less digits than its factorization.

20610640012354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580952.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 20610640012354 its reverse (45321004601602), we get a palindrome (65931644613956).

The spelling of 20610640012354 in words is "twenty trillion, six hundred ten billion, six hundred forty million, twelve thousand, three hundred fifty-four".