152551366421 has 4 divisors (see below), whose sum is σ = 152560932972. Its totient is φ = 152541799872.

The previous prime is 152551366349. The next prime is 152551366427. The reversal of 152551366421 is 124663155251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57702765796 + 94848600625 = 240214^2 + 307975^2 .

It is a cyclic number.

It is not a de Polignac number, because 152551366421 - 2²² = 152547172117 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 (152551366427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4759316 + ... + 4791261.

It is an arithmetic number, because the mean of its divisors is an integer number (38140233243).

Almost surely, 2^152551366421 is an apocalyptic number.

It is an amenable number.

152551366421 is a deficient number, since it is larger than the sum of its proper divisors (9566551).

152551366421 is an equidigital number, since it uses as much as digits as its factorization.

152551366421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566550.

The product of its digits is 216000, while the sum is 41.

The spelling of 152551366421 in words is "one hundred fifty-two billion, five hundred fifty-one million, three hundred sixty-six thousand, four hundred twenty-one".