2634557121 has 24 divisors (see below), whose sum is σ = 4420413504. Its totient is φ = 1480779360.

The previous prime is 2634557083. The next prime is 2634557137. The reversal of 2634557121 is 1217554362.

2634557121 is a `hidden beast` number, since 2 + 63 + 4 + 5 + 571 + 21 = 666.

It is not a de Polignac number, because 2634557121 - 2⁹ = 2634556609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2634557161) 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, 338931 + ... + 346616.

It is an arithmetic number, because the mean of its divisors is an integer number (184183896).

Almost surely, 2^2634557121 is an apocalyptic number.

2634557121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2634557121 is a deficient number, since it is larger than the sum of its proper divisors (1785856383).

2634557121 is a wasteful number, since it uses less digits than its factorization.

2634557121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685621 (or 685618 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2634557121 is about 51327.9370421216. The cubic root of 2634557121 is about 1381.1341794438.

The spelling of 2634557121 in words is "two billion, six hundred thirty-four million, five hundred fifty-seven thousand, one hundred twenty-one".