855466015438 has 4 divisors (see below), whose sum is σ = 1283199023160. Its totient is φ = 427733007718.

The previous prime is 855466015373. The next prime is 855466015441. The reversal of 855466015438 is 834510664558.

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

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, 213866503858 + ... + 213866503861.

It is an arithmetic number, because the mean of its divisors is an integer number (320799755790).

Almost surely, 2^855466015438 is an apocalyptic number.

855466015438 is a deficient number, since it is larger than the sum of its proper divisors (427733007722).

855466015438 is a wasteful number, since it uses less digits than its factorization.

855466015438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427733007721.

The product of its (nonzero) digits is 13824000, while the sum is 55.

The spelling of 855466015438 in words is "eight hundred fifty-five billion, four hundred sixty-six million, fifteen thousand, four hundred thirty-eight".