4251563621077 has 8 divisors (see below), whose sum is σ = 4310329070360. Its totient is φ = 4192812357120.

The previous prime is 4251563621057. The next prime is 4251563621113. The reversal of 4251563621077 is 7701263651524.

It can be written as a sum of positive squares in 4 ways, for example, as 3085928135761 + 1165635485316 = 1756681^2 + 1079646^2 .

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 4251563621077 - 2¹⁵ = 4251563588309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4251563621077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251563621057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2942052 + ... + 4142317.

It is an arithmetic number, because the mean of its divisors is an integer number (538791133795).

Almost surely, 2^{4251563621077} is an apocalyptic number.

It is an amenable number.

4251563621077 is a deficient number, since it is larger than the sum of its proper divisors (58765449283).

4251563621077 is an equidigital number, since it uses as much as digits as its factorization.

4251563621077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092663.

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

The spelling of 4251563621077 in words is "four trillion, two hundred fifty-one billion, five hundred sixty-three million, six hundred twenty-one thousand, seventy-seven".