551108351640 has 512 divisors, whose sum is σ = 2162330173440. Its totient is φ = 108955545600.

The previous prime is 551108351639. The next prime is 551108351641. The reversal of 551108351640 is 46153801155.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (551108351639) and next prime (551108351641).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551108351641) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 40584532 + ... + 40598108.

It is an arithmetic number, because the mean of its divisors is an integer number (4223301120).

Almost surely, 2^551108351640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551108351640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081165086720).

551108351640 is an abundant number, since it is smaller than the sum of its proper divisors (1611221821800).

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

551108351640 is a wasteful number, since it uses less digits than its factorization.

551108351640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13823 (or 13819 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 551108351640 in words is "five hundred fifty-one billion, one hundred eight million, three hundred fifty-one thousand, six hundred forty".