20206961474967 has 6 divisors (see below), whose sum is σ = 29187833241632. Its totient is φ = 13471307649972.

The previous prime is 20206961474951. The next prime is 20206961475011. The reversal of 20206961474967 is 76947416960202.

It is a happy number.

20206961474967 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 6 + 9 + 614 + 7 + 4 + 9 + 6 + 7 = 666.

It is not a de Polignac number, because 20206961474967 - 2⁴ = 20206961474951 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 (20206961474267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122608970823 + ... + 1122608970840.

Almost surely, 2^{20206961474967} is an apocalyptic number.

20206961474967 is a deficient number, since it is larger than the sum of its proper divisors (8980871766665).

20206961474967 is a wasteful number, since it uses less digits than its factorization.

20206961474967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245217941669 (or 2245217941666 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 20206961474967 in words is "twenty trillion, two hundred six billion, nine hundred sixty-one million, four hundred seventy-four thousand, nine hundred sixty-seven".