61745531453154 has 32 divisors (see below), whose sum is σ = 139801203296640. Its totient is φ = 20193507140976.

The previous prime is 61745531453129. The next prime is 61745531453257. The reversal of 61745531453154 is 45135413554716.

61745531453154 is a `hidden beast` number, since 6 + 1 + 7 + 4 + 5 + 5 + 31 + 453 + 154 = 666.

61745531453154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×61745531453154³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 61745531453154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10787127022 + ... + 10787132745.

It is an arithmetic number, because the mean of its divisors is an integer number (4368787603020).

Almost surely, 2^{61745531453154} is an apocalyptic number.

61745531453154 is an abundant number, since it is smaller than the sum of its proper divisors (78055671843486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61745531453154 is a wasteful number, since it uses less digits than its factorization.

61745531453154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21574259831 (or 21574259825 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 61745531453154 in words is "sixty-one trillion, seven hundred forty-five billion, five hundred thirty-one million, four hundred fifty-three thousand, one hundred fifty-four".