1540446694140 has 48 divisors (see below), whose sum is σ = 4566971378592. Its totient is φ = 386621915136.

The previous prime is 1540446694097. The next prime is 1540446694147. The reversal of 1540446694140 is 414966440451.

It is a super-3 number, since 3×1540446694140³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1540446694140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540446694147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755119909 + ... + 755121948.

It is an arithmetic number, because the mean of its divisors is an integer number (95145237054).

Almost surely, 2^{1540446694140} is an apocalyptic number.

1540446694140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540446694140 is an abundant number, since it is smaller than the sum of its proper divisors (3026524684452).

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

1540446694140 is a wasteful number, since it uses less digits than its factorization.

1540446694140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510241886 (or 1510241884 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 1540446694140 in words is "one trillion, five hundred forty billion, four hundred forty-six million, six hundred ninety-four thousand, one hundred forty".