406269997057 has 4 divisors (see below), whose sum is σ = 430168232196. Its totient is φ = 382371761920.

The previous prime is 406269997051. The next prime is 406269997069. The reversal of 406269997057 is 750799962604.

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 164536508161 + 241733488896 = 405631^2 + 491664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406269997057 is a prime.

It is a super-2 number, since 2×406269997057² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406269997057.

It is not an unprimeable number, because it can be changed into a prime (406269997051) 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, 11949117544 + ... + 11949117577.

It is an arithmetic number, because the mean of its divisors is an integer number (107542058049).

Almost surely, 2^406269997057 is an apocalyptic number.

It is an amenable number.

406269997057 is a deficient number, since it is larger than the sum of its proper divisors (23898235139).

406269997057 is a wasteful number, since it uses less digits than its factorization.

406269997057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23898235138.

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 406269997057 in words is "four hundred six billion, two hundred sixty-nine million, nine hundred ninety-seven thousand, fifty-seven".