1553401432001 has 2 divisors, whose sum is σ = 1553401432002. Its totient is φ = 1553401432000.

The previous prime is 1553401431877. The next prime is 1553401432007. The reversal of 1553401432001 is 1002341043551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286681862400 + 266719569601 = 1134320^2 + 516449^2 .

It is an emirp because it is prime and its reverse (1002341043551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1553401432001 - 2³⁸ = 1278523525057 is a prime.

It is a super-3 number, since 3×1553401432001³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1553401432007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776700716000 + 776700716001.

It is an arithmetic number, because the mean of its divisors is an integer number (776700716001).

Almost surely, 2^{1553401432001} is an apocalyptic number.

It is an amenable number.

1553401432001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553401432001 is an equidigital number, since it uses as much as digits as its factorization.

1553401432001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1553401432001 its reverse (1002341043551), we get a palindrome (2555742475552).

The spelling of 1553401432001 in words is "one trillion, five hundred fifty-three billion, four hundred one million, four hundred thirty-two thousand, one".