61671148197604 has 27 divisors (see below), whose sum is σ = 118628098800771. Its totient is φ = 28032261558840.

The previous prime is 61671148197577. The next prime is 61671148197619. The reversal of 61671148197604 is 40679184117616.

The square root of 61671148197604 is 7853098.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 172589677 + ... + 172946635.

Almost surely, 2^{61671148197604} is an apocalyptic number.

61671148197604 is the 7853098-th square number.

It is an amenable number.

61671148197604 is a deficient number, since it is larger than the sum of its proper divisors (56956950603167).

61671148197604 is an frugal number, since it uses more digits than its factorization.

61671148197604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713944 (or 356972 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 61671148197604 in words is "sixty-one trillion, six hundred seventy-one billion, one hundred forty-eight million, one hundred ninety-seven thousand, six hundred four".