60778400687 has 2 divisors, whose sum is σ = 60778400688. Its totient is φ = 60778400686.

The previous prime is 60778400671. The next prime is 60778400699. The reversal of 60778400687 is 78600487706.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60778400687 - 2⁴ = 60778400671 is a prime.

It is a super-4 number, since 4×60778400687⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60778400387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30389200343 + 30389200344.

It is an arithmetic number, because the mean of its divisors is an integer number (30389200344).

Almost surely, 2^60778400687 is an apocalyptic number.

60778400687 is a deficient number, since it is larger than the sum of its proper divisors (1).

60778400687 is an equidigital number, since it uses as much as digits as its factorization.

60778400687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 60778400687 in words is "sixty billion, seven hundred seventy-eight million, four hundred thousand, six hundred eighty-seven".