1481140787261 has 2 divisors, whose sum is σ = 1481140787262. Its totient is φ = 1481140787260.

The previous prime is 1481140787251. The next prime is 1481140787363. The reversal of 1481140787261 is 1627870411841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1461560102500 + 19580684761 = 1208950^2 + 139931^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481140787261 - 2²⁶ = 1481073678397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1481140787251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740570393630 + 740570393631.

It is an arithmetic number, because the mean of its divisors is an integer number (740570393631).

Almost surely, 2^{1481140787261} is an apocalyptic number.

It is an amenable number.

1481140787261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1481140787261 is an equidigital number, since it uses as much as digits as its factorization.

1481140787261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 1481140787261 in words is "one trillion, four hundred eighty-one billion, one hundred forty million, seven hundred eighty-seven thousand, two hundred sixty-one".