1579012218797 has 4 divisors (see below), whose sum is σ = 1700474697180. Its totient is φ = 1457549740416.

The previous prime is 1579012218787. The next prime is 1579012218799. The reversal of 1579012218797 is 7978122109751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 753274711396 + 825737507401 = 867914^2 + 908701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1579012218797 - 2⁶ = 1579012218733 is a prime.

It is a super-2 number, since 2×1579012218797² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1579012218799) 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, 60731239172 + ... + 60731239197.

It is an arithmetic number, because the mean of its divisors is an integer number (425118674295).

Almost surely, 2^{1579012218797} is an apocalyptic number.

It is an amenable number.

1579012218797 is a deficient number, since it is larger than the sum of its proper divisors (121462478383).

1579012218797 is a wasteful number, since it uses less digits than its factorization.

1579012218797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121462478382.

The product of its (nonzero) digits is 4445280, while the sum is 59.

The spelling of 1579012218797 in words is "one trillion, five hundred seventy-nine billion, twelve million, two hundred eighteen thousand, seven hundred ninety-seven".