61614621043 has 4 divisors (see below), whose sum is σ = 61617729600. Its totient is φ = 61611512488.

The previous prime is 61614621017. The next prime is 61614621091. The reversal of 61614621043 is 34012641616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61614621043 - 2²¹ = 61612523891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61614601043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524355 + ... + 1564252.

It is an arithmetic number, because the mean of its divisors is an integer number (15404432400).

Almost surely, 2^61614621043 is an apocalyptic number.

61614621043 is a deficient number, since it is larger than the sum of its proper divisors (3108557).

61614621043 is a wasteful number, since it uses less digits than its factorization.

61614621043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108556.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 61614621043 in words is "sixty-one billion, six hundred fourteen million, six hundred twenty-one thousand, forty-three".