2541621520351 has 16 divisors (see below), whose sum is σ = 2642439935520. Its totient is φ = 2442674586240.

The previous prime is 2541621520289. The next prime is 2541621520363. The reversal of 2541621520351 is 1530251261452.

It is a cyclic number.

It is not a de Polignac number, because 2541621520351 - 2⁹ = 2541621519839 is a prime.

It is a super-2 number, since 2×2541621520351² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2541621520351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541621520381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241120 + ... + 2267461.

It is an arithmetic number, because the mean of its divisors is an integer number (165152495970).

Almost surely, 2^{2541621520351} is an apocalyptic number.

2541621520351 is a deficient number, since it is larger than the sum of its proper divisors (100818415169).

2541621520351 is a wasteful number, since it uses less digits than its factorization.

2541621520351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508954.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 2541621520351 in words is "two trillion, five hundred forty-one billion, six hundred twenty-one million, five hundred twenty thousand, three hundred fifty-one".