721468611501 has 16 divisors (see below), whose sum is σ = 1049526689088. Its totient is φ = 437204620800.

The previous prime is 721468611491. The next prime is 721468611533. The reversal of 721468611501 is 105116864127.

It is not a de Polignac number, because 721468611501 - 2¹³ = 721468603309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721468611571) 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, 927556 + ... + 1517661.

It is an arithmetic number, because the mean of its divisors is an integer number (65595418068).

Almost surely, 2^721468611501 is an apocalyptic number.

It is an amenable number.

721468611501 is a deficient number, since it is larger than the sum of its proper divisors (328058077587).

721468611501 is a wasteful number, since it uses less digits than its factorization.

721468611501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454172.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 721468611501 in words is "seven hundred twenty-one billion, four hundred sixty-eight million, six hundred eleven thousand, five hundred one".