61072856854 has 8 divisors (see below), whose sum is σ = 91785120408. Its totient is φ = 30477816720.

The previous prime is 61072856839. The next prime is 61072856903. The reversal of 61072856854 is 45865827016.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29304552 + ... + 29306635.

It is an arithmetic number, because the mean of its divisors is an integer number (11473140051).

Almost surely, 2^61072856854 is an apocalyptic number.

61072856854 is a deficient number, since it is larger than the sum of its proper divisors (30712263554).

61072856854 is a wasteful number, since it uses less digits than its factorization.

61072856854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58611710.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 61072856854 in words is "sixty-one billion, seventy-two million, eight hundred fifty-six thousand, eight hundred fifty-four".