140661554432 has 54 divisors (see below), whose sum is σ = 326614274658. Its totient is φ = 60283517952.

The previous prime is 140661554401. The next prime is 140661554447. The reversal of 140661554432 is 234455166041.

It can be written as a sum of positive squares in only one way, i.e., 136769790976 + 3891763456 = 369824^2 + 62384^2 .

It is a super-3 number, since 3×140661554432³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140661554432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5594183 + ... + 5619270.

Almost surely, 2^140661554432 is an apocalyptic number.

It is an amenable number.

140661554432 is an abundant number, since it is smaller than the sum of its proper divisors (185952720226).

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

140661554432 is an equidigital number, since it uses as much as digits as its factorization.

140661554432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11213483 (or 11213462 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 140661554432 in words is "one hundred forty billion, six hundred sixty-one million, five hundred fifty-four thousand, four hundred thirty-two".