61277523843 has 4 divisors (see below), whose sum is σ = 81703365128. Its totient is φ = 40851682560.

The previous prime is 61277523833. The next prime is 61277523863. The reversal of 61277523843 is 34832577216.

61277523843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61277523843 - 2⁶ = 61277523779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61277523792 and 61277523801.

It is not an unprimeable number, because it can be changed into a prime (61277523803) 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, 10212920638 + ... + 10212920643.

It is an arithmetic number, because the mean of its divisors is an integer number (20425841282).

Almost surely, 2^61277523843 is an apocalyptic number.

61277523843 is a deficient number, since it is larger than the sum of its proper divisors (20425841285).

61277523843 is a wasteful number, since it uses less digits than its factorization.

61277523843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20425841284.

The product of its digits is 1693440, while the sum is 48.

The spelling of 61277523843 in words is "sixty-one billion, two hundred seventy-seven million, five hundred twenty-three thousand, eight hundred forty-three".