20757518877507 has 8 divisors (see below), whose sum is σ = 29133359828160. Its totient is φ = 13110011922600.

The previous prime is 20757518877497. The next prime is 20757518877523. The reversal of 20757518877507 is 70577881575702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20757518877507 - 2¹² = 20757518873411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20757518877547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182083498869 + ... + 182083498982.

It is an arithmetic number, because the mean of its divisors is an integer number (3641669978520).

Almost surely, 2^{20757518877507} is an apocalyptic number.

20757518877507 is a deficient number, since it is larger than the sum of its proper divisors (8375840950653).

20757518877507 is a wasteful number, since it uses less digits than its factorization.

20757518877507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364166997873.

The product of its (nonzero) digits is 268912000, while the sum is 69.

The spelling of 20757518877507 in words is "twenty trillion, seven hundred fifty-seven billion, five hundred eighteen million, eight hundred seventy-seven thousand, five hundred seven".