2151634633461 has 24 divisors (see below), whose sum is σ = 3124997491200. Its totient is φ = 1426546398816.

The previous prime is 2151634633441. The next prime is 2151634633469. The reversal of 2151634633461 is 1643364361512.

2151634633461 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 6 + 3 + 4 + 633 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 2151634633461 - 2¹¹ = 2151634631413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151634633469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3557815 + ... + 4118411.

It is an arithmetic number, because the mean of its divisors is an integer number (130208228800).

Almost surely, 2^{2151634633461} is an apocalyptic number.

It is an amenable number.

2151634633461 is a deficient number, since it is larger than the sum of its proper divisors (973362857739).

2151634633461 is a wasteful number, since it uses less digits than its factorization.

2151634633461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562945 (or 562942 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

Adding to 2151634633461 its reverse (1643364361512), we get a palindrome (3794998994973).

The spelling of 2151634633461 in words is "two trillion, one hundred fifty-one billion, six hundred thirty-four million, six hundred thirty-three thousand, four hundred sixty-one".