212626051505 has 16 divisors (see below), whose sum is σ = 304279766784. Its totient is φ = 139461558720.

The previous prime is 212626051457. The next prime is 212626051511. The reversal of 212626051505 is 505150626212.

It is not a de Polignac number, because 212626051505 - 2¹⁶ = 212625985969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 132065066 + ... + 132066675.

It is an arithmetic number, because the mean of its divisors is an integer number (19017485424).

Almost surely, 2^212626051505 is an apocalyptic number.

It is an amenable number.

212626051505 is a deficient number, since it is larger than the sum of its proper divisors (91653715279).

212626051505 is a wasteful number, since it uses less digits than its factorization.

212626051505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264131776.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 212626051505 its reverse (505150626212), we get a palindrome (717776677717).

The spelling of 212626051505 in words is "two hundred twelve billion, six hundred twenty-six million, fifty-one thousand, five hundred five".