6156143540 has 24 divisors (see below), whose sum is σ = 12935984040. Its totient is φ = 2460917888.

The previous prime is 6156143533. The next prime is 6156143549. The reversal of 6156143540 is 453416516.

It can be written as a sum of positive squares in 4 ways, for example, as 1964616976 + 4191526564 = 44324^2 + 64742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6156143540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6156143549) 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, 63155 + ... + 127674.

It is an arithmetic number, because the mean of its divisors is an integer number (538999335).

Almost surely, 2^6156143540 is an apocalyptic number.

It is an amenable number.

6156143540 is an abundant number, since it is smaller than the sum of its proper divisors (6779840500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6156143540 is a wasteful number, since it uses less digits than its factorization.

6156143540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192451 (or 192449 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 6156143540 is about 78461.0957099122. The cubic root of 6156143540 is about 1832.7486678534.

The spelling of 6156143540 in words is "six billion, one hundred fifty-six million, one hundred forty-three thousand, five hundred forty".