355966421405 has 96 divisors (see below), whose sum is σ = 510408438912. Its totient is φ = 237558182400.

The previous prime is 355966421389. The next prime is 355966421407. The reversal of 355966421405 is 504124669553.

It is not a de Polignac number, because 355966421405 - 2⁴ = 355966421389 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 (355966421407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1075427090 + ... + 1075427420.

It is an arithmetic number, because the mean of its divisors is an integer number (5316754572).

Almost surely, 2^355966421405 is an apocalyptic number.

355966421405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

355966421405 is a deficient number, since it is larger than the sum of its proper divisors (154442017507).

355966421405 is a wasteful number, since it uses less digits than its factorization.

355966421405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 355966421405 in words is "three hundred fifty-five billion, nine hundred sixty-six million, four hundred twenty-one thousand, four hundred five".