201551215070 has 16 divisors (see below), whose sum is σ = 362807218368. Its totient is φ = 80617145760.

The previous prime is 201551215067. The next prime is 201551215133. The reversal of 201551215070 is 70512155102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156326 + ... + 653865.

It is an arithmetic number, because the mean of its divisors is an integer number (22675451148).

Almost surely, 2^201551215070 is an apocalyptic number.

201551215070 is a deficient number, since it is larger than the sum of its proper divisors (161256003298).

201551215070 is a wasteful number, since it uses less digits than its factorization.

201551215070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835075.

The product of its (nonzero) digits is 3500, while the sum is 29.

The spelling of 201551215070 in words is "two hundred one billion, five hundred fifty-one million, two hundred fifteen thousand, seventy".