201512261663512 has 8 divisors (see below), whose sum is σ = 377835490619100. Its totient is φ = 100756130831752.

The previous prime is 201512261663491. The next prime is 201512261663639. The reversal of 201512261663512 is 215366162215102.

201512261663512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12594516353962 + ... + 12594516353977.

Almost surely, 2^{201512261663512} is an apocalyptic number.

It is an amenable number.

201512261663512 is a deficient number, since it is larger than the sum of its proper divisors (176323228955588).

201512261663512 is a wasteful number, since it uses less digits than its factorization.

201512261663512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25189032707945 (or 25189032707941 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 201512261663512 in words is "two hundred one trillion, five hundred twelve billion, two hundred sixty-one million, six hundred sixty-three thousand, five hundred twelve".