2251540213534 has 16 divisors (see below), whose sum is σ = 3390795014688. Its totient is φ = 1121276096512.

The previous prime is 2251540213501. The next prime is 2251540213537. The reversal of 2251540213534 is 4353120451522.

It is a happy number.

It is a super-4 number, since 4×2251540213534⁴ (a number of 51 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2251540213493 and 2251540213502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251540213537) 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, 4976154 + ... + 5409730.

It is an arithmetic number, because the mean of its divisors is an integer number (211924688418).

Almost surely, 2^{2251540213534} is an apocalyptic number.

2251540213534 is a deficient number, since it is larger than the sum of its proper divisors (1139254801154).

2251540213534 is a wasteful number, since it uses less digits than its factorization.

2251540213534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443939.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 2251540213534 in words is "two trillion, two hundred fifty-one billion, five hundred forty million, two hundred thirteen thousand, five hundred thirty-four".