1272337731552 has 48 divisors (see below), whose sum is σ = 3377413383120. Its totient is φ = 419347264512.

The previous prime is 1272337731551. The next prime is 1272337731569. The reversal of 1272337731552 is 2551377332721.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272337731551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74449423 + ... + 74466510.

It is an arithmetic number, because the mean of its divisors is an integer number (70362778815).

Almost surely, 2^{1272337731552} is an apocalyptic number.

1272337731552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1272337731552 is an abundant number, since it is smaller than the sum of its proper divisors (2105075651568).

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

1272337731552 is a wasteful number, since it uses less digits than its factorization.

1272337731552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148916035 (or 148916027 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 48.

The spelling of 1272337731552 in words is "one trillion, two hundred seventy-two billion, three hundred thirty-seven million, seven hundred thirty-one thousand, five hundred fifty-two".