67563715961 has 64 divisors (see below), whose sum is σ = 86619456000. Its totient is φ = 51368325120.

The previous prime is 67563715913. The next prime is 67563715991. The reversal of 67563715961 is 16951736576.

It is not a de Polignac number, because 67563715961 - 2⁶ = 67563715897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67563715897 and 67563715906.

It is not an unprimeable number, because it can be changed into a prime (67563715991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29259875 + ... + 29262183.

It is an arithmetic number, because the mean of its divisors is an integer number (1353429000).

Almost surely, 2^67563715961 is an apocalyptic number.

67563715961 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

67563715961 is a deficient number, since it is larger than the sum of its proper divisors (19055740039).

67563715961 is a wasteful number, since it uses less digits than its factorization.

67563715961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562.

The product of its digits is 7144200, while the sum is 56.

The spelling of 67563715961 in words is "sixty-seven billion, five hundred sixty-three million, seven hundred fifteen thousand, nine hundred sixty-one".