21477314403772 has 48 divisors (see below), whose sum is σ = 39895190496000. Its totient is φ = 10081850671872.

The previous prime is 21477314403719. The next prime is 21477314403793. The reversal of 21477314403772 is 27730441377412.

It is a super-2 number, since 2×21477314403772² (a number of 27 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 in 15 ways as a sum of consecutive naturals, for example, 70664443 + ... + 70967725.

It is an arithmetic number, because the mean of its divisors is an integer number (831149802000).

Almost surely, 2^{21477314403772} is an apocalyptic number.

It is an amenable number.

21477314403772 is a deficient number, since it is larger than the sum of its proper divisors (18417876092228).

21477314403772 is a wasteful number, since it uses less digits than its factorization.

21477314403772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305890 (or 305888 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 52.

The spelling of 21477314403772 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, four hundred three thousand, seven hundred seventy-two".