61406898243 has 32 divisors (see below), whose sum is σ = 88855979520. Its totient is φ = 37620253440.

The previous prime is 61406898233. The next prime is 61406898269. The reversal of 61406898243 is 34289860416.

It is not a de Polignac number, because 61406898243 - 2²⁴ = 61390121027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61406898233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11343 + ... + 350631.

It is an arithmetic number, because the mean of its divisors is an integer number (2776749360).

Almost surely, 2^61406898243 is an apocalyptic number.

61406898243 is a deficient number, since it is larger than the sum of its proper divisors (27449081277).

61406898243 is a wasteful number, since it uses less digits than its factorization.

61406898243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339419.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 61406898243 in words is "sixty-one billion, four hundred six million, eight hundred ninety-eight thousand, two hundred forty-three".