661541053148 has 12 divisors (see below), whose sum is σ = 1157760195312. Its totient is φ = 330752425920.

The previous prime is 661541053051. The next prime is 661541053169. The reversal of 661541053148 is 841350145166.

It is a happy number.

661541053148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×661541053148³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 661541053099 and 661541053108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442765 + ... + 4589252.

It is an arithmetic number, because the mean of its divisors is an integer number (96480016276).

Almost surely, 2^661541053148 is an apocalyptic number.

It is an amenable number.

661541053148 is a deficient number, since it is larger than the sum of its proper divisors (496219142164).

661541053148 is a wasteful number, since it uses less digits than its factorization.

661541053148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9050332 (or 9050330 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 661541053148 in words is "six hundred sixty-one billion, five hundred forty-one million, fifty-three thousand, one hundred forty-eight".