1020264141665 has 64 divisors (see below), whose sum is σ = 1340807592960. Its totient is φ = 742304870400.

The previous prime is 1020264141653. The next prime is 1020264141697. The reversal of 1020264141665 is 5661414620201.

It is a happy number.

It is not a de Polignac number, because 1020264141665 - 2¹⁶ = 1020264076129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150500246 + ... + 150507024.

It is an arithmetic number, because the mean of its divisors is an integer number (20950118640).

Almost surely, 2^{1020264141665} is an apocalyptic number.

It is an amenable number.

1020264141665 is a deficient number, since it is larger than the sum of its proper divisors (320543451295).

1020264141665 is a wasteful number, since it uses less digits than its factorization.

1020264141665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322.

The product of its (nonzero) digits is 69120, while the sum is 38.

Adding to 1020264141665 its reverse (5661414620201), we get a palindrome (6681678761866).

The spelling of 1020264141665 in words is "one trillion, twenty billion, two hundred sixty-four million, one hundred forty-one thousand, six hundred sixty-five".