21355342450070 has 32 divisors (see below), whose sum is σ = 40701152066688. Its totient is φ = 8039582926848.

The previous prime is 21355342450067. The next prime is 21355342450111. The reversal of 21355342450070 is 7005424355312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19622462 + ... + 20682158.

It is an arithmetic number, because the mean of its divisors is an integer number (1271911002084).

Almost surely, 2^{21355342450070} is an apocalyptic number.

21355342450070 is a deficient number, since it is larger than the sum of its proper divisors (19345809616618).

21355342450070 is a wasteful number, since it uses less digits than its factorization.

21355342450070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178264.

The product of its (nonzero) digits is 504000, while the sum is 41.

The spelling of 21355342450070 in words is "twenty-one trillion, three hundred fifty-five billion, three hundred forty-two million, four hundred fifty thousand, seventy".