20347148152887 has 16 divisors (see below), whose sum is σ = 27868389891072. Its totient is φ = 13195484042400.

The previous prime is 20347148152853. The next prime is 20347148152901. The reversal of 20347148152887 is 78825184174302.

It is not a de Polignac number, because 20347148152887 - 2¹² = 20347148148791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20347148152887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20347148152187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17962623 + ... + 19061744.

It is an arithmetic number, because the mean of its divisors is an integer number (1741774368192).

Almost surely, 2^{20347148152887} is an apocalyptic number.

20347148152887 is a deficient number, since it is larger than the sum of its proper divisors (7521241738185).

20347148152887 is a wasteful number, since it uses less digits than its factorization.

20347148152887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37029358.

The product of its (nonzero) digits is 24084480, while the sum is 60.

The spelling of 20347148152887 in words is "twenty trillion, three hundred forty-seven billion, one hundred forty-eight million, one hundred fifty-two thousand, eight hundred eighty-seven".