149186720771 has 16 divisors (see below), whose sum is σ = 164223037440. Its totient is φ = 134396545920.

The previous prime is 149186720747. The next prime is 149186720797. The reversal of 149186720771 is 177027681941.

It is a cyclic number.

It is not a de Polignac number, because 149186720771 - 2¹⁸ = 149186458627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149186720731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8342786 + ... + 8360648.

It is an arithmetic number, because the mean of its divisors is an integer number (10263939840).

Almost surely, 2^149186720771 is an apocalyptic number.

149186720771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149186720771 is a deficient number, since it is larger than the sum of its proper divisors (15036316669).

149186720771 is a wasteful number, since it uses less digits than its factorization.

149186720771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24706.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 149186720771 in words is "one hundred forty-nine billion, one hundred eighty-six million, seven hundred twenty thousand, seven hundred seventy-one".