364121478821 has 4 divisors (see below), whose sum is σ = 383285767200. Its totient is φ = 344957190444.

The previous prime is 364121478817. The next prime is 364121478871. The reversal of 364121478821 is 128874121463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 128874121463 = 113 ⋅1140478951.

It is a cyclic number.

It is not a de Polignac number, because 364121478821 - 2² = 364121478817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (364121478871) 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, 9582144161 + ... + 9582144198.

It is an arithmetic number, because the mean of its divisors is an integer number (95821441800).

Almost surely, 2^364121478821 is an apocalyptic number.

It is an amenable number.

364121478821 is a deficient number, since it is larger than the sum of its proper divisors (19164288379).

364121478821 is a wasteful number, since it uses less digits than its factorization.

364121478821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19164288378.

The product of its digits is 516096, while the sum is 47.

The spelling of 364121478821 in words is "three hundred sixty-four billion, one hundred twenty-one million, four hundred seventy-eight thousand, eight hundred twenty-one".