407640367642 has 4 divisors (see below), whose sum is σ = 611460551466. Its totient is φ = 203820183820.

The previous prime is 407640367633. The next prime is 407640367657. The reversal of 407640367642 is 246763046704.

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

It can be written as a sum of positive squares in only one way, i.e., 407617125601 + 23242041 = 638449^2 + 4821^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101910091909 + ... + 101910091912.

Almost surely, 2^407640367642 is an apocalyptic number.

407640367642 is a deficient number, since it is larger than the sum of its proper divisors (203820183824).

407640367642 is a wasteful number, since it uses less digits than its factorization.

407640367642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203820183823.

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 407640367642 in words is "four hundred seven billion, six hundred forty million, three hundred sixty-seven thousand, six hundred forty-two".