1050021961539 has 8 divisors (see below), whose sum is σ = 1400036155152. Its totient is φ = 700011204480.

The previous prime is 1050021961523. The next prime is 1050021961543. The reversal of 1050021961539 is 9351691200501.

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

It is not a de Polignac number, because 1050021961539 - 2⁴ = 1050021961523 is a prime.

It is a super-2 number, since 2×1050021961539² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1050021961539.

It is not an unprimeable number, because it can be changed into a prime (1050021561539) 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, 32602 + ... + 1449519.

It is an arithmetic number, because the mean of its divisors is an integer number (175004519394).

Almost surely, 2^{1050021961539} is an apocalyptic number.

1050021961539 is a deficient number, since it is larger than the sum of its proper divisors (350014193613).

1050021961539 is a wasteful number, since it uses less digits than its factorization.

1050021961539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718277.

The product of its (nonzero) digits is 72900, while the sum is 42.

The spelling of 1050021961539 in words is "one trillion, fifty billion, twenty-one million, nine hundred sixty-one thousand, five hundred thirty-nine".