1979723750835 has 8 divisors (see below), whose sum is σ = 3167558001360. Its totient is φ = 1055852667104.

The previous prime is 1979723750833. The next prime is 1979723750869. The reversal of 1979723750835 is 5380573279791.

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 1979723750835 - 2¹ = 1979723750833 is a prime.

It is a super-2 number, since 2×1979723750835² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1979723750833) 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, 65990791680 + ... + 65990791709.

It is an arithmetic number, because the mean of its divisors is an integer number (395944750170).

Almost surely, 2^{1979723750835} is an apocalyptic number.

1979723750835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1979723750835 is a deficient number, since it is larger than the sum of its proper divisors (1187834250525).

1979723750835 is a wasteful number, since it uses less digits than its factorization.

1979723750835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131981583397.

The product of its (nonzero) digits is 100018800, while the sum is 66.

The spelling of 1979723750835 in words is "one trillion, nine hundred seventy-nine billion, seven hundred twenty-three million, seven hundred fifty thousand, eight hundred thirty-five".