7140477438155 has 4 divisors (see below), whose sum is σ = 8568572925792. Its totient is φ = 5712381950520.

The previous prime is 7140477438121. The next prime is 7140477438161. The reversal of 7140477438155 is 5518347740417.

It is a happy number.

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

It is not a de Polignac number, because 7140477438155 - 2¹² = 7140477434059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7140477438155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714047743811 + ... + 714047743820.

It is an arithmetic number, because the mean of its divisors is an integer number (2142143231448).

Almost surely, 2^{7140477438155} is an apocalyptic number.

7140477438155 is a deficient number, since it is larger than the sum of its proper divisors (1428095487637).

7140477438155 is a wasteful number, since it uses less digits than its factorization.

7140477438155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428095487636.

The product of its (nonzero) digits is 13171200, while the sum is 56.

The spelling of 7140477438155 in words is "seven trillion, one hundred forty billion, four hundred seventy-seven million, four hundred thirty-eight thousand, one hundred fifty-five".