1553154051461 has 2 divisors, whose sum is σ = 1553154051462. Its totient is φ = 1553154051460.

The previous prime is 1553154051409. The next prime is 1553154051467. The reversal of 1553154051461 is 1641504513551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1312238980900 + 240915070561 = 1145530^2 + 490831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1553154051461 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553154051467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776577025730 + 776577025731.

It is an arithmetic number, because the mean of its divisors is an integer number (776577025731).

Almost surely, 2^{1553154051461} is an apocalyptic number.

It is an amenable number.

1553154051461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553154051461 is an equidigital number, since it uses as much as digits as its factorization.

1553154051461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 1553154051461 in words is "one trillion, five hundred fifty-three billion, one hundred fifty-four million, fifty-one thousand, four hundred sixty-one".