55578771902 has 8 divisors (see below), whose sum is σ = 83510183736. Its totient is φ = 27742043992.

The previous prime is 55578771901. The next prime is 55578771947. The reversal of 55578771902 is 20917787555.

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

It is a super-2 number, since 2×55578771902² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55578771901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23669513 + ... + 23671860.

It is an arithmetic number, because the mean of its divisors is an integer number (10438772967).

Almost surely, 2^55578771902 is an apocalyptic number.

55578771902 is a deficient number, since it is larger than the sum of its proper divisors (27931411834).

55578771902 is a wasteful number, since it uses less digits than its factorization.

55578771902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47341962.

The product of its (nonzero) digits is 6174000, while the sum is 56.

The spelling of 55578771902 in words is "fifty-five billion, five hundred seventy-eight million, seven hundred seventy-one thousand, nine hundred two".