406751343505 has 16 divisors (see below), whose sum is σ = 525773367504. Its totient is φ = 300298521600.

The previous prime is 406751343463. The next prime is 406751343539. The reversal of 406751343505 is 505343157604.

It can be written as a sum of positive squares in 8 ways, for example, as 71205720336 + 335545623169 = 266844^2 + 579263^2 .

It is not a de Polignac number, because 406751343505 - 2²¹ = 406749246353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471724 + ... + 1017853.

It is an arithmetic number, because the mean of its divisors is an integer number (32860835469).

Almost surely, 2^406751343505 is an apocalyptic number.

It is an amenable number.

406751343505 is a deficient number, since it is larger than the sum of its proper divisors (119022023999).

406751343505 is a wasteful number, since it uses less digits than its factorization.

406751343505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493796.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 406751343505 in words is "four hundred six billion, seven hundred fifty-one million, three hundred forty-three thousand, five hundred five".