1540010265251 has 4 divisors (see below), whose sum is σ = 1553638674792. Its totient is φ = 1526381855712.

The previous prime is 1540010265229. The next prime is 1540010265281. The reversal of 1540010265251 is 1525620100451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1540010265251 - 2²⁶ = 1539943156387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540010265281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6814204601 + ... + 6814204826.

It is an arithmetic number, because the mean of its divisors is an integer number (388409668698).

Almost surely, 2^{1540010265251} is an apocalyptic number.

1540010265251 is a deficient number, since it is larger than the sum of its proper divisors (13628409541).

1540010265251 is a wasteful number, since it uses less digits than its factorization.

1540010265251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13628409540.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 1540010265251 in words is "one trillion, five hundred forty billion, ten million, two hundred sixty-five thousand, two hundred fifty-one".