6261551540 has 24 divisors (see below), whose sum is σ = 13307686560. Its totient is φ = 2474443808.

The previous prime is 6261551507. The next prime is 6261551573. The reversal of 6261551540 is 451551626.

It is an interprime number because it is at equal distance from previous prime (6261551507) and next prime (6261551573).

It is a self number, because there is not a number n which added to its sum of digits gives 6261551540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1884350 + ... + 1887669.

It is an arithmetic number, because the mean of its divisors is an integer number (554486940).

Almost surely, 2^6261551540 is an apocalyptic number.

It is an amenable number.

6261551540 is an abundant number, since it is smaller than the sum of its proper divisors (7046135020).

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

6261551540 is a wasteful number, since it uses less digits than its factorization.

6261551540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772111 (or 3772109 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 6261551540 is about 79129.9661316748. The cubic root of 6261551540 is about 1843.1498838793.

The spelling of 6261551540 in words is "six billion, two hundred sixty-one million, five hundred fifty-one thousand, five hundred forty".