61223437535 has 32 divisors (see below), whose sum is σ = 80126323200. Its totient is φ = 44639337600.

The previous prime is 61223437531. The next prime is 61223437567. The reversal of 61223437535 is 53573432216.

61223437535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61223437535 - 2² = 61223437531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61223437492 and 61223437501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61223437531) 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, 1676420 + ... + 1712550.

It is an arithmetic number, because the mean of its divisors is an integer number (2503947600).

Almost surely, 2^61223437535 is an apocalyptic number.

61223437535 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61223437535 is a deficient number, since it is larger than the sum of its proper divisors (18902885665).

61223437535 is a wasteful number, since it uses less digits than its factorization.

61223437535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36479.

The product of its digits is 453600, while the sum is 41.

The spelling of 61223437535 in words is "sixty-one billion, two hundred twenty-three million, four hundred thirty-seven thousand, five hundred thirty-five".