20529605353754 has 16 divisors (see below), whose sum is σ = 35194966584000. Its totient is φ = 8798062942944.

The previous prime is 20529605353717. The next prime is 20529605353757. The reversal of 20529605353754 is 45735350692502.

It is a self number, because there is not a number n which added to its sum of digits gives 20529605353754.

It is not an unprimeable number, because it can be changed into a prime (20529605353757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27903179 + ... + 28629470.

It is an arithmetic number, because the mean of its divisors is an integer number (2199685411500).

Almost surely, 2^{20529605353754} is an apocalyptic number.

20529605353754 is a deficient number, since it is larger than the sum of its proper divisors (14665361230246).

20529605353754 is a wasteful number, since it uses less digits than its factorization.

20529605353754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56558597.

The product of its (nonzero) digits is 34020000, while the sum is 56.

The spelling of 20529605353754 in words is "twenty trillion, five hundred twenty-nine billion, six hundred five million, three hundred fifty-three thousand, seven hundred fifty-four".