5426157661 has 4 divisors (see below), whose sum is σ = 5541607872. Its totient is φ = 5310707452.

The previous prime is 5426157637. The next prime is 5426157673. The reversal of 5426157661 is 1667516245.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1667516245 = 5 ⋅333503249.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5426157661 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 (5426157361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57725035 + ... + 57725128.

It is an arithmetic number, because the mean of its divisors is an integer number (1385401968).

Almost surely, 2^5426157661 is an apocalyptic number.

It is an amenable number.

5426157661 is a deficient number, since it is larger than the sum of its proper divisors (115450211).

5426157661 is a wasteful number, since it uses less digits than its factorization.

5426157661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115450210.

The product of its digits is 302400, while the sum is 43.

The square root of 5426157661 is about 73662.4576090155. The cubic root of 5426157661 is about 1757.2388761579.

The spelling of 5426157661 in words is "five billion, four hundred twenty-six million, one hundred fifty-seven thousand, six hundred sixty-one".