1015721562241 has 8 divisors (see below), whose sum is σ = 1033455584160. Its totient is φ = 998004820512.

The previous prime is 1015721562221. The next prime is 1015721562259. The reversal of 1015721562241 is 1422651275101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1015721562241 - 2⁷ = 1015721562113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1015721562241.

It is not an unprimeable number, because it can be changed into a prime (1015721562221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4201435 + ... + 4436608.

It is an arithmetic number, because the mean of its divisors is an integer number (129181948020).

Almost surely, 2^{1015721562241} is an apocalyptic number.

It is an amenable number.

1015721562241 is a deficient number, since it is larger than the sum of its proper divisors (17734021919).

1015721562241 is an equidigital number, since it uses as much as digits as its factorization.

1015721562241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640095.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 1015721562241 in words is "one trillion, fifteen billion, seven hundred twenty-one million, five hundred sixty-two thousand, two hundred forty-one".