67357519961 has 2 divisors, whose sum is σ = 67357519962. Its totient is φ = 67357519960.

The previous prime is 67357519939. The next prime is 67357519967. The reversal of 67357519961 is 16991575376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48600847936 + 18756672025 = 220456^2 + 136955^2 .

It is a cyclic number.

It is not a de Polignac number, because 67357519961 - 2³⁰ = 66283778137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67357519961.

It is not a weakly prime, because it can be changed into another prime (67357519967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33678759980 + 33678759981.

It is an arithmetic number, because the mean of its divisors is an integer number (33678759981).

Almost surely, 2^67357519961 is an apocalyptic number.

It is an amenable number.

67357519961 is a deficient number, since it is larger than the sum of its proper divisors (1).

67357519961 is an equidigital number, since it uses as much as digits as its factorization.

67357519961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10716300, while the sum is 59.

The spelling of 67357519961 in words is "sixty-seven billion, three hundred fifty-seven million, five hundred nineteen thousand, nine hundred sixty-one".