1400341025521 has 2 divisors, whose sum is σ = 1400341025522. Its totient is φ = 1400341025520.

The previous prime is 1400341025383. The next prime is 1400341025533. The reversal of 1400341025521 is 1255201430041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1372880890000 + 27460135521 = 1171700^2 + 165711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400341025521 - 2³⁷ = 1262902072049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400341025521.

It is not a weakly prime, because it can be changed into another prime (1400341025561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700170512760 + 700170512761.

It is an arithmetic number, because the mean of its divisors is an integer number (700170512761).

Almost surely, 2^{1400341025521} is an apocalyptic number.

It is an amenable number.

1400341025521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400341025521 is an equidigital number, since it uses as much as digits as its factorization.

1400341025521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1400341025521 its reverse (1255201430041), we get a palindrome (2655542455562).

The spelling of 1400341025521 in words is "one trillion, four hundred billion, three hundred forty-one million, twenty-five thousand, five hundred twenty-one".