61535156652623 has 4 divisors (see below), whose sum is σ = 61535329022640. Its totient is φ = 61534984282608.

The previous prime is 61535156652617. The next prime is 61535156652637. The reversal of 61535156652623 is 32625665153516.

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 61535156652623 - 2⁶ = 61535156652559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61535156652643) 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, 85648403 + ... + 86363876.

It is an arithmetic number, because the mean of its divisors is an integer number (15383832255660).

Almost surely, 2^{61535156652623} is an apocalyptic number.

61535156652623 is a deficient number, since it is larger than the sum of its proper divisors (172370017).

61535156652623 is a wasteful number, since it uses less digits than its factorization.

61535156652623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172370016.

The product of its digits is 29160000, while the sum is 56.

The spelling of 61535156652623 in words is "sixty-one trillion, five hundred thirty-five billion, one hundred fifty-six million, six hundred fifty-two thousand, six hundred twenty-three".