7542661756 has 24 divisors (see below), whose sum is σ = 15123344096. Its totient is φ = 3224422080.

The previous prime is 7542661733. The next prime is 7542661811. The reversal of 7542661756 is 6571662457.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328155 + ... + 350386.

Almost surely, 2^7542661756 is an apocalyptic number.

It is an amenable number.

7542661756 is an abundant number, since it is smaller than the sum of its proper divisors (7580682340).

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

7542661756 is a wasteful number, since it uses less digits than its factorization.

7542661756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678949 (or 678947 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 49.

The square root of 7542661756 is about 86848.4988701589. The cubic root of 7542661756 is about 1961.1382528358.

The spelling of 7542661756 in words is "seven billion, five hundred forty-two million, six hundred sixty-one thousand, seven hundred fifty-six".