1265663452410 has 48 divisors (see below), whose sum is σ = 3760828546176. Its totient is φ = 289294503264.

The previous prime is 1265663452409. The next prime is 1265663452441. The reversal of 1265663452410 is 142543665621.

1265663452410 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 6 + 634 + 5 + 2 + 4 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004494174 + ... + 1004495433.

It is an arithmetic number, because the mean of its divisors is an integer number (78350594712).

Almost surely, 2^{1265663452410} is an apocalyptic number.

1265663452410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265663452410 is an abundant number, since it is smaller than the sum of its proper divisors (2495165093766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265663452410 is a wasteful number, since it uses less digits than its factorization.

1265663452410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008989627 (or 2008989624 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 1265663452410 in words is "one trillion, two hundred sixty-five billion, six hundred sixty-three million, four hundred fifty-two thousand, four hundred ten".