55667555390 has 16 divisors (see below), whose sum is σ = 100922477040. Its totient is φ = 22106827200.

The previous prime is 55667555369. The next prime is 55667555393. The reversal of 55667555390 is 9355576655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667555393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20022911 + ... + 20025690.

It is an arithmetic number, because the mean of its divisors is an integer number (6307654815).

Almost surely, 2^55667555390 is an apocalyptic number.

55667555390 is a deficient number, since it is larger than the sum of its proper divisors (45254921650).

55667555390 is a wasteful number, since it uses less digits than its factorization.

55667555390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40048747.

The product of its (nonzero) digits is 21262500, while the sum is 56.

The spelling of 55667555390 in words is "fifty-five billion, six hundred sixty-seven million, five hundred fifty-five thousand, three hundred ninety".