720048156421 has 16 divisors (see below), whose sum is σ = 796115312640. Its totient is φ = 645806634480.

The previous prime is 720048156397. The next prime is 720048156463. The reversal of 720048156421 is 124651840027.

It is a cyclic number.

It is not a de Polignac number, because 720048156421 - 2¹⁵ = 720048123653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720048156491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189671 + ... + 1689796.

It is an arithmetic number, because the mean of its divisors is an integer number (49757207040).

Almost surely, 2^720048156421 is an apocalyptic number.

It is an amenable number.

720048156421 is a deficient number, since it is larger than the sum of its proper divisors (76067156219).

720048156421 is a wasteful number, since it uses less digits than its factorization.

720048156421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879784.

The product of its (nonzero) digits is 107520, while the sum is 40.

Adding to 720048156421 its reverse (124651840027), we get a palindrome (844699996448).

The spelling of 720048156421 in words is "seven hundred twenty billion, forty-eight million, one hundred fifty-six thousand, four hundred twenty-one".