1535440212020 has 96 divisors (see below), whose sum is σ = 3910333142016. Its totient is φ = 498766924800.

The previous prime is 1535440211999. The next prime is 1535440212043. The reversal of 1535440212020 is 202120445351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8570489 + ... + 8747808.

It is an arithmetic number, because the mean of its divisors is an integer number (40732636896).

Almost surely, 2^{1535440212020} is an apocalyptic number.

1535440212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1535440212020 is an abundant number, since it is smaller than the sum of its proper divisors (2374892929996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1535440212020 is a wasteful number, since it uses less digits than its factorization.

1535440212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17318361 (or 17318359 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 1535440212020 its reverse (202120445351), we get a palindrome (1737560657371).

The spelling of 1535440212020 in words is "one trillion, five hundred thirty-five billion, four hundred forty million, two hundred twelve thousand, twenty".