1540469994864 has 40 divisors (see below), whose sum is σ = 3994341377040. Its totient is φ = 511581109248.

The previous prime is 1540469994863. The next prime is 1540469994887. The reversal of 1540469994864 is 4684999640451.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540469994863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59639737 + ... + 59665560.

It is an arithmetic number, because the mean of its divisors is an integer number (99858534426).

Almost surely, 2^{1540469994864} is an apocalyptic number.

It is an amenable number.

1540469994864 is an abundant number, since it is smaller than the sum of its proper divisors (2453871382176).

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

1540469994864 is a wasteful number, since it uses less digits than its factorization.

1540469994864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119305577 (or 119305571 counting only the distinct ones).

The product of its (nonzero) digits is 268738560, while the sum is 69.

The spelling of 1540469994864 in words is "one trillion, five hundred forty billion, four hundred sixty-nine million, nine hundred ninety-four thousand, eight hundred sixty-four".