2013669512578 has 4 divisors (see below), whose sum is σ = 3020504268870. Its totient is φ = 1006834756288.

The previous prime is 2013669512551. The next prime is 2013669512611. The reversal of 2013669512578 is 8752159663102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2001254427649 + 12415084929 = 1414657^2 + 111423^2 .

It is a super-2 number, since 2×2013669512578² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503417378143 + ... + 503417378146.

Almost surely, 2^{2013669512578} is an apocalyptic number.

2013669512578 is a deficient number, since it is larger than the sum of its proper divisors (1006834756292).

2013669512578 is a wasteful number, since it uses less digits than its factorization.

2013669512578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006834756291.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 2013669512578 in words is "two trillion, thirteen billion, six hundred sixty-nine million, five hundred twelve thousand, five hundred seventy-eight".