20147867512 has 32 divisors (see below), whose sum is σ = 37951290000. Its totient is φ = 10027632384.

The previous prime is 20147867503. The next prime is 20147867527. The reversal of 20147867512 is 21576874102.

It is a super-2 number, since 2×20147867512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578468 + ... + 1591180.

Almost surely, 2^20147867512 is an apocalyptic number.

It is an amenable number.

20147867512 is a deficient number, since it is larger than the sum of its proper divisors (17803422488).

20147867512 is a wasteful number, since it uses less digits than its factorization.

20147867512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13615 (or 13611 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 20147867512 in words is "twenty billion, one hundred forty-seven million, eight hundred sixty-seven thousand, five hundred twelve".