1220624770464 has 384 divisors, whose sum is σ = 3916256117760. Its totient is φ = 366809932800.

The previous prime is 1220624770427. The next prime is 1220624770493. The reversal of 1220624770464 is 4640774260221.

1220624770464 is a `hidden beast` number, since 1 + 2 + 20 + 62 + 47 + 70 + 464 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 632119579 + ... + 632121509.

It is an arithmetic number, because the mean of its divisors is an integer number (10198583640).

Almost surely, 2^{1220624770464} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220624770464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1958128058880).

1220624770464 is an abundant number, since it is smaller than the sum of its proper divisors (2695631347296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220624770464 is a wasteful number, since it uses less digits than its factorization.

1220624770464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 1220624770464 in words is "one trillion, two hundred twenty billion, six hundred twenty-four million, seven hundred seventy thousand, four hundred sixty-four".