1247299764480 has 864 divisors, whose sum is σ = 5393709554688. Its totient is φ = 258538291200.

The previous prime is 1247299764479. The next prime is 1247299764541. The reversal of 1247299764480 is 844679927421.

1247299764480 is a `hidden beast` number, since 1 + 2 + 4 + 7 + 2 + 9 + 97 + 64 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 414246175 + ... + 414249185.

It is an arithmetic number, because the mean of its divisors is an integer number (6242719392).

Almost surely, 2^{1247299764480} is an apocalyptic number.

1247299764480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1247299764480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2696854777344).

1247299764480 is an abundant number, since it is smaller than the sum of its proper divisors (4146409790208).

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

1247299764480 is a wasteful number, since it uses less digits than its factorization.

1247299764480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 1247299764480 in words is "one trillion, two hundred forty-seven billion, two hundred ninety-nine million, seven hundred sixty-four thousand, four hundred eighty".