1020020514051 has 64 divisors (see below), whose sum is σ = 1724762787840. Its totient is φ = 520777434240.

The previous prime is 1020020514013. The next prime is 1020020514067. The reversal of 1020020514051 is 1504150200201.

It is not a de Polignac number, because 1020020514051 - 2¹⁴ = 1020020497667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1020020514001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98709681 + ... + 98720013.

It is an arithmetic number, because the mean of its divisors is an integer number (26949418560).

Almost surely, 2^{1020020514051} is an apocalyptic number.

1020020514051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020020514051 is a deficient number, since it is larger than the sum of its proper divisors (704742273789).

1020020514051 is a wasteful number, since it uses less digits than its factorization.

1020020514051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17656.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 1020020514051 its reverse (1504150200201), we get a palindrome (2524170714252).

The spelling of 1020020514051 in words is "one trillion, twenty billion, twenty million, five hundred fourteen thousand, fifty-one".