20146634073477 has 32 divisors (see below), whose sum is σ = 30033232680960. Its totient is φ = 13347365163840.

The previous prime is 20146634073457. The next prime is 20146634073479. The reversal of 20146634073477 is 77437043664102.

20146634073477 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 6 + 63 + 40 + 73 + 477 = 666.

It is not a de Polignac number, because 20146634073477 - 2³² = 20142339106181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146634073479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3182323 + ... + 7100735.

It is an arithmetic number, because the mean of its divisors is an integer number (938538521280).

Almost surely, 2^{20146634073477} is an apocalyptic number.

20146634073477 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20146634073477 is a deficient number, since it is larger than the sum of its proper divisors (9886598607483).

20146634073477 is a wasteful number, since it uses less digits than its factorization.

20146634073477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919610 (or 3919604 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 54.

The spelling of 20146634073477 in words is "twenty trillion, one hundred forty-six billion, six hundred thirty-four million, seventy-three thousand, four hundred seventy-seven".