55838019638 has 16 divisors (see below), whose sum is σ = 85828102416. Its totient is φ = 27229100160.

The previous prime is 55838019617. The next prime is 55838019659. The reversal of 55838019638 is 83691083855.

It is an interprime number because it is at equal distance from previous prime (55838019617) and next prime (55838019659).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142370 + ... + 363242.

It is an arithmetic number, because the mean of its divisors is an integer number (5364256401).

Almost surely, 2^55838019638 is an apocalyptic number.

55838019638 is a deficient number, since it is larger than the sum of its proper divisors (29990082778).

55838019638 is a wasteful number, since it uses less digits than its factorization.

55838019638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223999.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 55838019638 in words is "fifty-five billion, eight hundred thirty-eight million, nineteen thousand, six hundred thirty-eight".