61001676467449 has 9 divisors (see below), whose sum is σ = 63033199957701. Its totient is φ = 59033646141660.

The previous prime is 61001676467429. The next prime is 61001676467477. The reversal of 61001676467449 is 94476467610016.

The square root of 61001676467449 is 7810357.

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

It is not a de Polignac number, because 61001676467449 - 2⁹ = 61001676466937 is a prime.

It is a super-2 number, since 2×61001676467449² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61001676467429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 241995094 + ... + 242247040.

It is an arithmetic number, because the mean of its divisors is an integer number (7003688884189).

Almost surely, 2^{61001676467449} is an apocalyptic number.

61001676467449 is the 7810357-th square number.

61001676467449 is the 3905179-th centered octagonal number.

It is an amenable number.

61001676467449 is a deficient number, since it is larger than the sum of its proper divisors (2031523490252).

61001676467449 is an frugal number, since it uses more digits than its factorization.

61001676467449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503956 (or 251978 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 61001676467449 in words is "sixty-one trillion, one billion, six hundred seventy-six million, four hundred sixty-seven thousand, four hundred forty-nine".