72550427404372 has 12 divisors (see below), whose sum is σ = 126963504320436. Its totient is φ = 36275140455680.

The previous prime is 72550427404339. The next prime is 72550427404387. The reversal of 72550427404372 is 27340472405527.

It can be written as a sum of positive squares in 2 ways, for example, as 13725883883716 + 58824543520656 = 3704846^2 + 7669716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16052029 + ... + 20069092.

It is an arithmetic number, because the mean of its divisors is an integer number (10580292026703).

Almost surely, 2^{72550427404372} is an apocalyptic number.

It is an amenable number.

72550427404372 is a deficient number, since it is larger than the sum of its proper divisors (54413076916064).

72550427404372 is a wasteful number, since it uses less digits than its factorization.

72550427404372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36623258 (or 36623256 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 52.

Adding to 72550427404372 its reverse (27340472405527), we get a palindrome (99890899809899).

The spelling of 72550427404372 in words is "seventy-two trillion, five hundred fifty billion, four hundred twenty-seven million, four hundred four thousand, three hundred seventy-two".