20253502534 has 16 divisors (see below), whose sum is σ = 32170851648. Its totient is φ = 9530015872.

The previous prime is 20253502513. The next prime is 20253502559. The reversal of 20253502534 is 43520535202.

It is a junction number, because it is equal to n+sod(n) for n = 20253502496 and 20253502505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345939 + ... + 400225.

It is an arithmetic number, because the mean of its divisors is an integer number (2010678228).

Almost surely, 2^20253502534 is an apocalyptic number.

20253502534 is a deficient number, since it is larger than the sum of its proper divisors (11917349114).

20253502534 is a wasteful number, since it uses less digits than its factorization.

20253502534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65279.

The product of its (nonzero) digits is 36000, while the sum is 31.

The spelling of 20253502534 in words is "twenty billion, two hundred fifty-three million, five hundred two thousand, five hundred thirty-four".