21035042541315 has 24 divisors (see below), whose sum is σ = 39775353169968. Its totient is φ = 10198808504640.

The previous prime is 21035042541269. The next prime is 21035042541343. The reversal of 21035042541315 is 51314524053012.

21035042541315 is a `hidden beast` number, since 2 + 10 + 3 + 50 + 42 + 541 + 3 + 15 = 666.

It is not a de Polignac number, because 21035042541315 - 2²⁵ = 21035008986883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21035042541315.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21247517224 + ... + 21247518213.

It is an arithmetic number, because the mean of its divisors is an integer number (1657306382082).

Almost surely, 2^{21035042541315} is an apocalyptic number.

21035042541315 is a deficient number, since it is larger than the sum of its proper divisors (18740310628653).

21035042541315 is a wasteful number, since it uses less digits than its factorization.

21035042541315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42495035459 (or 42495035456 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 21035042541315 its reverse (51314524053012), we get a palindrome (72349566594327).

The spelling of 21035042541315 in words is "twenty-one trillion, thirty-five billion, forty-two million, five hundred forty-one thousand, three hundred fifteen".