1227642872040 has 192 divisors, whose sum is σ = 4455889401600. Its totient is φ = 302188983552.

The previous prime is 1227642871969. The next prime is 1227642872063. The reversal of 1227642872040 is 402782467221.

1227642872040 is a `hidden beast` number, since 12 + 2 + 7 + 6 + 428 + 7 + 204 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4731360 + ... + 4984079.

It is an arithmetic number, because the mean of its divisors is an integer number (23207757300).

Almost surely, 2^{1227642872040} is an apocalyptic number.

1227642872040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227642872040 is an abundant number, since it is smaller than the sum of its proper divisors (3228246529560).

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

1227642872040 is a wasteful number, since it uses less digits than its factorization.

1227642872040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715478 (or 9715462 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 1227642872040 in words is "one trillion, two hundred twenty-seven billion, six hundred forty-two million, eight hundred seventy-two thousand, forty".