651232506534 has 32 divisors (see below), whose sum is σ = 1384207354080. Its totient is φ = 203548718592.

The previous prime is 651232506523. The next prime is 651232506571. The reversal of 651232506534 is 435605232156.

It is a happy number.

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, 11839909 + ... + 11894784.

It is an arithmetic number, because the mean of its divisors is an integer number (43256479815).

Almost surely, 2^651232506534 is an apocalyptic number.

651232506534 is an abundant number, since it is smaller than the sum of its proper divisors (732974847546).

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

651232506534 is a wasteful number, since it uses less digits than its factorization.

651232506534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23734984.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 651232506534 in words is "six hundred fifty-one billion, two hundred thirty-two million, five hundred six thousand, five hundred thirty-four".