1016855397494 has 8 divisors (see below), whose sum is σ = 1615005631368. Its totient is φ = 478520187040.

The previous prime is 1016855397491. The next prime is 1016855397499. The reversal of 1016855397494 is 4947935586101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016855397491) 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, 14953755812 + ... + 14953755879.

It is an arithmetic number, because the mean of its divisors is an integer number (201875703921).

Almost surely, 2^{1016855397494} is an apocalyptic number.

1016855397494 is a deficient number, since it is larger than the sum of its proper divisors (598150233874).

1016855397494 is a wasteful number, since it uses less digits than its factorization.

1016855397494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29907511710.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 1016855397494 in words is "one trillion, sixteen billion, eight hundred fifty-five million, three hundred ninety-seven thousand, four hundred ninety-four".