2123455102461 has 48 divisors (see below), whose sum is σ = 3824233440768. Its totient is φ = 1103042858400.

The previous prime is 2123455102367. The next prime is 2123455102487. The reversal of 2123455102461 is 1642015543212.

2123455102461 is a `hidden beast` number, since 2 + 1 + 23 + 4 + 551 + 0 + 24 + 61 = 666.

It is not a de Polignac number, because 2123455102461 - 2¹¹ = 2123455100413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123455112461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18578490 + ... + 18692436.

It is an arithmetic number, because the mean of its divisors is an integer number (79671530016).

Almost surely, 2^{2123455102461} is an apocalyptic number.

2123455102461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2123455102461 is a deficient number, since it is larger than the sum of its proper divisors (1700778338307).

2123455102461 is a wasteful number, since it uses less digits than its factorization.

2123455102461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140862 (or 140859 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 2123455102461 in words is "two trillion, one hundred twenty-three billion, four hundred fifty-five million, one hundred two thousand, four hundred sixty-one".