653421325634 has 64 divisors (see below), whose sum is σ = 1286512727040. Its totient is φ = 241140473280.

The previous prime is 653421325631. The next prime is 653421325643. The reversal of 653421325634 is 436523124356.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (653421325631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21862769 + ... + 21892635.

It is an arithmetic number, because the mean of its divisors is an integer number (20101761360).

Almost surely, 2^653421325634 is an apocalyptic number.

653421325634 is a deficient number, since it is larger than the sum of its proper divisors (633091401406).

653421325634 is a wasteful number, since it uses less digits than its factorization.

653421325634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37383.

The product of its digits is 1555200, while the sum is 44.

The spelling of 653421325634 in words is "six hundred fifty-three billion, four hundred twenty-one million, three hundred twenty-five thousand, six hundred thirty-four".