67710077461 has 16 divisors (see below), whose sum is σ = 77400510768. Its totient is φ = 58678272000.

The previous prime is 67710077437. The next prime is 67710077471. The reversal of 67710077461 is 16477001776.

It can be written as a sum of positive squares in 8 ways, for example, as 7425096561 + 60284980900 = 86169^2 + 245530^2 .

It is a cyclic number.

It is not a de Polignac number, because 67710077461 - 2¹⁹ = 67709553173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67710077471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293400 + ... + 470641.

It is an arithmetic number, because the mean of its divisors is an integer number (4837531923).

Almost surely, 2^67710077461 is an apocalyptic number.

It is an amenable number.

67710077461 is a deficient number, since it is larger than the sum of its proper divisors (9690433307).

67710077461 is a wasteful number, since it uses less digits than its factorization.

67710077461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764472.

The product of its (nonzero) digits is 345744, while the sum is 46.

The spelling of 67710077461 in words is "sixty-seven billion, seven hundred ten million, seventy-seven thousand, four hundred sixty-one".