133520010215251 has 16 divisors (see below), whose sum is σ = 146563550800128. Its totient is φ = 120627691506400.

The previous prime is 133520010215239. The next prime is 133520010215309. The reversal of 133520010215251 is 152512010025331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133520010215251 - 2²⁹ = 133519473344339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133520010255251) 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, 98905 + ... + 16341658.

It is an arithmetic number, because the mean of its divisors is an integer number (9160221925008).

Almost surely, 2^{133520010215251} is an apocalyptic number.

133520010215251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133520010215251 is a deficient number, since it is larger than the sum of its proper divisors (13043540584877).

133520010215251 is a wasteful number, since it uses less digits than its factorization.

133520010215251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16445162.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 133520010215251 in words is "one hundred thirty-three trillion, five hundred twenty billion, ten million, two hundred fifteen thousand, two hundred fifty-one".