61742954845 has 16 divisors (see below), whose sum is σ = 87044614272. Its totient is φ = 41449815360.

The previous prime is 61742954837. The next prime is 61742954879. The reversal of 61742954845 is 54845924716.

61742954845 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 61742954845 - 2³ = 61742954837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43176177 + ... + 43177606.

It is an arithmetic number, because the mean of its divisors is an integer number (5440288392).

Almost surely, 2^61742954845 is an apocalyptic number.

61742954845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61742954845 is a deficient number, since it is larger than the sum of its proper divisors (25301659427).

61742954845 is a wasteful number, since it uses less digits than its factorization.

61742954845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86353812.

The product of its digits is 9676800, while the sum is 55.

The spelling of 61742954845 in words is "sixty-one billion, seven hundred forty-two million, nine hundred fifty-four thousand, eight hundred forty-five".