651660541532 has 48 divisors (see below), whose sum is σ = 1531174428672. Its totient is φ = 234363430080.

The previous prime is 651660541523. The next prime is 651660541537. The reversal of 651660541532 is 235145066156.

It is a super-2 number, since 2×651660541532² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651660541537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81372188 + ... + 81380195.

It is an arithmetic number, because the mean of its divisors is an integer number (31899467264).

Almost surely, 2^651660541532 is an apocalyptic number.

It is an amenable number.

651660541532 is an abundant number, since it is smaller than the sum of its proper divisors (879513887140).

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

651660541532 is a wasteful number, since it uses less digits than its factorization.

651660541532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162752418 (or 162752416 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 651660541532 in words is "six hundred fifty-one billion, six hundred sixty million, five hundred forty-one thousand, five hundred thirty-two".