21070776574 has 8 divisors (see below), whose sum is σ = 31986962280. Its totient is φ = 10408455816.

The previous prime is 21070776547. The next prime is 21070776577. The reversal of 21070776574 is 47567707012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21070776577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63466029 + ... + 63466360.

It is an arithmetic number, because the mean of its divisors is an integer number (3998370285).

Almost surely, 2^21070776574 is an apocalyptic number.

21070776574 is a deficient number, since it is larger than the sum of its proper divisors (10916185706).

21070776574 is a wasteful number, since it uses less digits than its factorization.

21070776574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126932474.

The product of its (nonzero) digits is 576240, while the sum is 46.

The spelling of 21070776574 in words is "twenty-one billion, seventy million, seven hundred seventy-six thousand, five hundred seventy-four".