21140525140396 has 6 divisors (see below), whose sum is σ = 36995918995700. Its totient is φ = 10570262570196.

The previous prime is 21140525140313. The next prime is 21140525140439. The reversal of 21140525140396 is 69304152504112.

It is a happy number.

It is a super-2 number, since 2×21140525140396² (a number of 27 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, 2642565642546 + ... + 2642565642553.

Almost surely, 2^{21140525140396} is an apocalyptic number.

It is an amenable number.

21140525140396 is a deficient number, since it is larger than the sum of its proper divisors (15855393855304).

21140525140396 is a wasteful number, since it uses less digits than its factorization.

21140525140396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285131285103 (or 5285131285101 counting only the distinct ones).

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

The spelling of 21140525140396 in words is "twenty-one trillion, one hundred forty billion, five hundred twenty-five million, one hundred forty thousand, three hundred ninety-six".