830149156787861 has 8 divisors (see below), whose sum is σ = 853911271032960. Its totient is φ = 806641182802368.

The previous prime is 830149156787857. The next prime is 830149156787891. The reversal of 830149156787861 is 168787651941038.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 830149156787861 - 2² = 830149156787857 is a prime.

It is a super-2 number, since 2×830149156787861² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830149156787831) 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, 63535058276 + ... + 63535071341.

It is an arithmetic number, because the mean of its divisors is an integer number (106738908879120).

Almost surely, 2^{830149156787861} is an apocalyptic number.

It is an amenable number.

830149156787861 is a deficient number, since it is larger than the sum of its proper divisors (23762114245099).

830149156787861 is a wasteful number, since it uses less digits than its factorization.

830149156787861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127070129803.

The product of its (nonzero) digits is 487710720, while the sum is 74.

The spelling of 830149156787861 in words is "eight hundred thirty trillion, one hundred forty-nine billion, one hundred fifty-six million, seven hundred eighty-seven thousand, eight hundred sixty-one".