7544680157 has 4 divisors (see below), whose sum is σ = 8622491616. Its totient is φ = 6466868700.

The previous prime is 7544680127. The next prime is 7544680177. The reversal of 7544680157 is 7510864457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7544680157 - 2¹⁰ = 7544679133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7544680127) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 538905719 + ... + 538905732.

It is an arithmetic number, because the mean of its divisors is an integer number (2155622904).

Almost surely, 2^7544680157 is an apocalyptic number.

It is an amenable number.

7544680157 is a deficient number, since it is larger than the sum of its proper divisors (1077811459).

7544680157 is a wasteful number, since it uses less digits than its factorization.

7544680157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077811458.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 7544680157 is about 86860.1183340202. The cubic root of 7544680157 is about 1961.3131694417.

The spelling of 7544680157 in words is "seven billion, five hundred forty-four million, six hundred eighty thousand, one hundred fifty-seven".