9986377778151 has 32 divisors (see below), whose sum is σ = 14852919110400. Its totient is φ = 5941167563520.

The previous prime is 9986377778149. The next prime is 9986377778159. The reversal of 9986377778151 is 1518777736899.

It is not a de Polignac number, because 9986377778151 - 2¹ = 9986377778149 is a prime.

It is a super-2 number, since 2×9986377778151² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986377778159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73607421 + ... + 73742966.

It is an arithmetic number, because the mean of its divisors is an integer number (464153722200).

Almost surely, 2^{9986377778151} is an apocalyptic number.

9986377778151 is a deficient number, since it is larger than the sum of its proper divisors (4866541332249).

9986377778151 is a wasteful number, since it uses less digits than its factorization.

9986377778151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147350479.

The product of its digits is 1120210560, while the sum is 78.

The spelling of 9986377778151 in words is "nine trillion, nine hundred eighty-six billion, three hundred seventy-seven million, seven hundred seventy-eight thousand, one hundred fifty-one".