2355151661 has 8 divisors (see below), whose sum is σ = 2494829880. Its totient is φ = 2215600128.

The previous prime is 2355151637. The next prime is 2355151691. The reversal of 2355151661 is 1661515532.

It can be written as a sum of positive squares in 4 ways, for example, as 513883561 + 1841268100 = 22669^2 + 42910^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2355151661 - 2¹⁸ = 2354889517 is a prime.

It is a super-2 number, since 2×2355151661² = 11093478692622117842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2355151621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8045 + ... + 69101.

It is an arithmetic number, because the mean of its divisors is an integer number (311853735).

Almost surely, 2^2355151661 is an apocalyptic number.

It is an amenable number.

2355151661 is a deficient number, since it is larger than the sum of its proper divisors (139678219).

2355151661 is a wasteful number, since it uses less digits than its factorization.

2355151661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63343.

The product of its digits is 27000, while the sum is 35.

The square root of 2355151661 is about 48529.9048113635. The cubic root of 2355151661 is about 1330.4736965692.

The spelling of 2355151661 in words is "two billion, three hundred fifty-five million, one hundred fifty-one thousand, six hundred sixty-one".