1212880846465 has 32 divisors (see below), whose sum is σ = 1570826023200. Its totient is φ = 895681843200.

The previous prime is 1212880846451. The next prime is 1212880846477. The reversal of 1212880846465 is 5646480882121.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 73881763344 + 1138999083121 = 271812^2 + 1067239^2 .

It is not a de Polignac number, because 1212880846465 - 2⁷ = 1212880846337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1474435 + ... + 2144695.

It is an arithmetic number, because the mean of its divisors is an integer number (49088313225).

Almost surely, 2^{1212880846465} is an apocalyptic number.

It is an amenable number.

1212880846465 is a deficient number, since it is larger than the sum of its proper divisors (357945176735).

1212880846465 is a wasteful number, since it uses less digits than its factorization.

1212880846465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670693.

The product of its (nonzero) digits is 5898240, while the sum is 55.

The spelling of 1212880846465 in words is "one trillion, two hundred twelve billion, eight hundred eighty million, eight hundred forty-six thousand, four hundred sixty-five".