155084649381 has 40 divisors (see below), whose sum is σ = 232278530880. Its totient is φ = 103118484672.

The previous prime is 155084649359. The next prime is 155084649383. The reversal of 155084649381 is 183946480551.

It is a happy number.

155084649381 is a `hidden beast` number, since 1 + 5 + 508 + 46 + 4 + 93 + 8 + 1 = 666.

It is not a de Polignac number, because 155084649381 - 2⁷ = 155084649253 is a prime.

It is a super-2 number, since 2×155084649381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155084649383) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 67515025 + ... + 67517321.

It is an arithmetic number, because the mean of its divisors is an integer number (5806963272).

Almost surely, 2^155084649381 is an apocalyptic number.

It is an amenable number.

155084649381 is a deficient number, since it is larger than the sum of its proper divisors (77193881499).

155084649381 is an equidigital number, since it uses as much as digits as its factorization.

155084649381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 155084649381 in words is "one hundred fifty-five billion, eighty-four million, six hundred forty-nine thousand, three hundred eighty-one".