1513111136421 has 8 divisors (see below), whose sum is σ = 2025922861440. Its totient is φ = 1004520084512.

The previous prime is 1513111136413. The next prime is 1513111136473. The reversal of 1513111136421 is 1246311113151.

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

It is a cyclic number.

It is not a de Polignac number, because 1513111136421 - 2³ = 1513111136413 is a prime.

It is a super-2 number, since 2×1513111136421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513111136221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055167440 + ... + 1055168873.

It is an arithmetic number, because the mean of its divisors is an integer number (253240357680).

Almost surely, 2^{1513111136421} is an apocalyptic number.

It is an amenable number.

1513111136421 is a deficient number, since it is larger than the sum of its proper divisors (512811725019).

1513111136421 is a wasteful number, since it uses less digits than its factorization.

1513111136421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110336555.

The product of its digits is 2160, while the sum is 30.

Adding to 1513111136421 its reverse (1246311113151), we get a palindrome (2759422249572).

The spelling of 1513111136421 in words is "one trillion, five hundred thirteen billion, one hundred eleven million, one hundred thirty-six thousand, four hundred twenty-one".