1251015540411 has 24 divisors (see below), whose sum is σ = 2064228522240. Its totient is φ = 659876327136.

The previous prime is 1251015540407. The next prime is 1251015540427. The reversal of 1251015540411 is 1140455101521.

It is not a de Polignac number, because 1251015540411 - 2² = 1251015540407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1251015542411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176245471 + ... + 176252568.

It is an arithmetic number, because the mean of its divisors is an integer number (86009521760).

Almost surely, 2^{1251015540411} is an apocalyptic number.

1251015540411 is a deficient number, since it is larger than the sum of its proper divisors (813212981829).

1251015540411 is a wasteful number, since it uses less digits than its factorization.

1251015540411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352498075 (or 352498062 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 30.

The spelling of 1251015540411 in words is "one trillion, two hundred fifty-one billion, fifteen million, five hundred forty thousand, four hundred eleven".