1292665540551 has 48 divisors (see below), whose sum is σ = 2190686876928. Its totient is φ = 670449830400.

The previous prime is 1292665540549. The next prime is 1292665540553. The reversal of 1292665540551 is 1550455662921.

It is an interprime number because it is at equal distance from previous prime (1292665540549) and next prime (1292665540553).

It is not a de Polignac number, because 1292665540551 - 2¹ = 1292665540549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1292665540494 and 1292665540503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292665540553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 386871 + ... + 1653783.

It is an arithmetic number, because the mean of its divisors is an integer number (45639309936).

Almost surely, 2^{1292665540551} is an apocalyptic number.

1292665540551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1292665540551 is a deficient number, since it is larger than the sum of its proper divisors (898021336377).

1292665540551 is a wasteful number, since it uses less digits than its factorization.

1292665540551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267572 (or 1267565 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 1292665540551 in words is "one trillion, two hundred ninety-two billion, six hundred sixty-five million, five hundred forty thousand, five hundred fifty-one".