2261510161505 has 32 divisors (see below), whose sum is σ = 3150364299264. Its totient is φ = 1526497822656.

The previous prime is 2261510161451. The next prime is 2261510161511. The reversal of 2261510161505 is 5051610151622.

It is a cyclic number.

It is not a de Polignac number, because 2261510161505 - 2⁶ = 2261510161441 is a prime.

It is a super-2 number, since 2×2261510161505² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 1276187 + ... + 2480256.

It is an arithmetic number, because the mean of its divisors is an integer number (98448884352).

Almost surely, 2^{2261510161505} is an apocalyptic number.

It is an amenable number.

2261510161505 is a deficient number, since it is larger than the sum of its proper divisors (888854137759).

2261510161505 is a wasteful number, since it uses less digits than its factorization.

2261510161505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756725.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 2261510161505 in words is "two trillion, two hundred sixty-one billion, five hundred ten million, one hundred sixty-one thousand, five hundred five".