61660929477452 has 12 divisors (see below), whose sum is σ = 108975009027696. Its totient is φ = 30525212612400.

The previous prime is 61660929477443. The next prime is 61660929477473. The reversal of 61660929477452 is 25477492906616.

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, 76313031128 + ... + 76313031935.

It is an arithmetic number, because the mean of its divisors is an integer number (9081250752308).

Almost surely, 2^{61660929477452} is an apocalyptic number.

It is an amenable number.

61660929477452 is a deficient number, since it is larger than the sum of its proper divisors (47314079550244).

61660929477452 is a wasteful number, since it uses less digits than its factorization.

61660929477452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152626063168 (or 152626063166 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 68.

The spelling of 61660929477452 in words is "sixty-one trillion, six hundred sixty billion, nine hundred twenty-nine million, four hundred seventy-seven thousand, four hundred fifty-two".