151223155501 has 32 divisors (see below), whose sum is σ = 172239955200. Its totient is φ = 131510400000.

The previous prime is 151223155483. The next prime is 151223155511. The reversal of 151223155501 is 105551322151.

It is a cyclic number.

It is not a de Polignac number, because 151223155501 - 2¹¹ = 151223153453 is a prime.

It is a super-2 number, since 2×151223155501² (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 (151223155511) 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, 19311855 + ... + 19319683.

It is an arithmetic number, because the mean of its divisors is an integer number (5382498600).

Almost surely, 2^151223155501 is an apocalyptic number.

151223155501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

151223155501 is a deficient number, since it is larger than the sum of its proper divisors (21016799699).

151223155501 is a wasteful number, since it uses less digits than its factorization.

151223155501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8421.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 151223155501 its reverse (105551322151), we get a palindrome (256774477652).

The spelling of 151223155501 in words is "one hundred fifty-one billion, two hundred twenty-three million, one hundred fifty-five thousand, five hundred one".