20675451507 has 16 divisors (see below), whose sum is σ = 27648432000. Its totient is φ = 13743090944.

The previous prime is 20675451491. The next prime is 20675451523. The reversal of 20675451507 is 70515457602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20675451491) and next prime (20675451523).

It is a cyclic number.

It is not a de Polignac number, because 20675451507 - 2⁴ = 20675451491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20675451547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3087619 + ... + 3094307.

It is an arithmetic number, because the mean of its divisors is an integer number (1728027000).

Almost surely, 2^20675451507 is an apocalyptic number.

20675451507 is a deficient number, since it is larger than the sum of its proper divisors (6972980493).

20675451507 is a wasteful number, since it uses less digits than its factorization.

20675451507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570.

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 20675451507 in words is "twenty billion, six hundred seventy-five million, four hundred fifty-one thousand, five hundred seven".