1227772615680 has 528 divisors, whose sum is σ = 4724827428960. Its totient is φ = 302215200768.

The previous prime is 1227772615637. The next prime is 1227772615733. The reversal of 1227772615680 is 865162777221.

1227772615680 is a `hidden beast` number, since 1 + 2 + 2 + 7 + 7 + 72 + 6 + 1 + 568 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23336284 + ... + 23388836.

Almost surely, 2^{1227772615680} is an apocalyptic number.

1227772615680 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 1227772615680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2362413714480).

1227772615680 is an abundant number, since it is smaller than the sum of its proper divisors (3497054813280).

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

1227772615680 is a wasteful number, since it uses less digits than its factorization.

1227772615680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52613 (or 52576 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 1227772615680 in words is "one trillion, two hundred twenty-seven billion, seven hundred seventy-two million, six hundred fifteen thousand, six hundred eighty".