394357257061 has 4 divisors (see below), whose sum is σ = 394360559712. Its totient is φ = 394353954412.

The previous prime is 394357257059. The next prime is 394357257089. The reversal of 394357257061 is 160752753493.

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.

It is a cyclic number.

It is not a de Polignac number, because 394357257061 - 2¹ = 394357257059 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 (394357257001) 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, 1465225 + ... + 1713358.

It is an arithmetic number, because the mean of its divisors is an integer number (98590139928).

Almost surely, 2^394357257061 is an apocalyptic number.

It is an amenable number.

394357257061 is a deficient number, since it is larger than the sum of its proper divisors (3302651).

394357257061 is a wasteful number, since it uses less digits than its factorization.

394357257061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302650.

The product of its (nonzero) digits is 4762800, while the sum is 52.

The spelling of 394357257061 in words is "three hundred ninety-four billion, three hundred fifty-seven million, two hundred fifty-seven thousand, sixty-one".