1994151714261 has 16 divisors (see below), whose sum is σ = 3039063343104. Its totient is φ = 1139381776944.

The previous prime is 1994151714259. The next prime is 1994151714319. The reversal of 1994151714261 is 1624171514991.

It is a happy number.

It is not a de Polignac number, because 1994151714261 - 2¹ = 1994151714259 is a prime.

It is a super-2 number, since 2×1994151714261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994151714211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5378341 + ... + 5737146.

It is an arithmetic number, because the mean of its divisors is an integer number (189941458944).

Almost surely, 2^{1994151714261} is an apocalyptic number.

It is an amenable number.

1994151714261 is a deficient number, since it is larger than the sum of its proper divisors (1044911628843).

1994151714261 is a wasteful number, since it uses less digits than its factorization.

1994151714261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11124040.

The product of its digits is 544320, while the sum is 51.

The spelling of 1994151714261 in words is "one trillion, nine hundred ninety-four billion, one hundred fifty-one million, seven hundred fourteen thousand, two hundred sixty-one".