215064562654 has 4 divisors (see below), whose sum is σ = 322596843984. Its totient is φ = 107532281326.

The previous prime is 215064562649. The next prime is 215064562663. The reversal of 215064562654 is 456265460512.

215064562654 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×215064562654² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53766140662 + ... + 53766140665.

It is an arithmetic number, because the mean of its divisors is an integer number (80649210996).

Almost surely, 2^215064562654 is an apocalyptic number.

215064562654 is a deficient number, since it is larger than the sum of its proper divisors (107532281330).

215064562654 is a wasteful number, since it uses less digits than its factorization.

215064562654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107532281329.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 215064562654 in words is "two hundred fifteen billion, sixty-four million, five hundred sixty-two thousand, six hundred fifty-four".