61445492943254 has 32 divisors (see below), whose sum is σ = 106868341771776. Its totient is φ = 25950824504640.

The previous prime is 61445492943217. The next prime is 61445492943269. The reversal of 61445492943254 is 45234929454416.

It is a super-2 number, since 2×61445492943254² (a number of 28 digits) contains 22 as substring.

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, 12215792 + ... + 16495955.

It is an arithmetic number, because the mean of its divisors is an integer number (3339635680368).

Almost surely, 2^{61445492943254} is an apocalyptic number.

61445492943254 is a deficient number, since it is larger than the sum of its proper divisors (45422848828522).

61445492943254 is a wasteful number, since it uses less digits than its factorization.

61445492943254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28713980.

The product of its digits is 149299200, while the sum is 62.

The spelling of 61445492943254 in words is "sixty-one trillion, four hundred forty-five billion, four hundred ninety-two million, nine hundred forty-three thousand, two hundred fifty-four".