10216761555 has 128 divisors (see below), whose sum is σ = 22168774656. Its totient is φ = 3879936000.

The previous prime is 10216761553. The next prime is 10216761557. The reversal of 10216761555 is 55516761201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10216761553) and next prime (10216761557).

It is not a de Polignac number, because 10216761555 - 2¹ = 10216761553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (10216761551) 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, 1513147 + ... + 1519883.

It is an arithmetic number, because the mean of its divisors is an integer number (173193552).

Almost surely, 2^10216761555 is an apocalyptic number.

10216761555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10216761555 is an abundant number, since it is smaller than the sum of its proper divisors (11952013101).

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

10216761555 is a wasteful number, since it uses less digits than its factorization.

10216761555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877.

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 10216761555 in words is "ten billion, two hundred sixteen million, seven hundred sixty-one thousand, five hundred fifty-five".