1020050256664 has 8 divisors (see below), whose sum is σ = 1912594231260. Its totient is φ = 510025128328.

The previous prime is 1020050256653. The next prime is 1020050256679. The reversal of 1020050256664 is 4666520500201.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1020050256664² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63753141034 + ... + 63753141049.

Almost surely, 2^{1020050256664} is an apocalyptic number.

It is an amenable number.

1020050256664 is a deficient number, since it is larger than the sum of its proper divisors (892543974596).

1020050256664 is a wasteful number, since it uses less digits than its factorization.

1020050256664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127506282089 (or 127506282085 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 1020050256664 its reverse (4666520500201), we get a palindrome (5686570756865).

The spelling of 1020050256664 in words is "one trillion, twenty billion, fifty million, two hundred fifty-six thousand, six hundred sixty-four".